The youngest of fourteen children born to Adhémar Dion and Thérèse Tanguay, both of French Canadian descent, Céline Dion was raised a Roman Catholic in a poverty-stricken, but, by her own account, happy home in Charlemagne, Quebec, Canada. Music had always been a part of the family (Dion was named after the song 'Céline', recorded by French singer Hugues Aufray two years before her birth), as she grew up singing with her siblings in her parents' small piano bar called 'Le Vieux Baril'. From an early age Dion had dreamed of being a performer. In a 1994 interview with 'People' magazine, she recalled, " I missed my family and my home, but I don't regret having lost my adolescence. I had one dream: I wanted to be a singer."

At age twelve, Dion collaborated with her mother and her brother Jacques to compose her first song, "Ce n'était qu'un rêve"("It Was Only a Dream"). Angélil was moved to tears by Dion's voice, and decided to make her a star. Further success in Europe, Asia, and Australia came when Dion represented Switzerland in the 1988 Eurovision Song Contest with the song 'Ne partez pas sans moi' ('Don't Go Without Me') and won the contest by a close margin in Dublin, Ireland. However, American success was yet to come, partly because she was exclusively a Francophone artist. At eighteen, after seeing a Michael Jackson performance, Dion told Angélil that she wanted to be a star like Jackson. Though confident in her talent, Angélil realized that her image needed to be changed in order for her to be marketed worldwide. The album was largely influenced by 1980s soft rock music that quickly found a niche within the adult contemporary radio format. 'Unison' also hit the right notes with critics: Jim Faber of 'Entertainment Weekly' wrote that Dion's vocals were "tastefully unadorned", and that she never attempted to "bring off styles that are beyond her". Stephen Erlewine of 'Allmusic' declared it as, "a fine, sophisticated American debut." Singles from the album included"(If There Was) Any Other Way "," The Last to Know "," Unison ", and" Where Does My Heart Beat Now ", a mid-tempo soft-rock ballad which made prominent use of the electric guitar. The latter became her first single to reach the top 10 on the U.S. 'Billboard' Hot 100, peaking at number four. The album established Dion as a rising singer in the United States, and across Continental Europe and Asia. In support of 'Unison', Celine Dion began a tour. During a concert while on the same tour, she injured her voice. She consulted with William Gould, an ORL of other singers like Luciano Pavarotti, Frank Sinatra, John Kennedy. He gave her her an ultimatum: have surgery on her vocal chords, or not utilize them at all for three weeks. The song captured a musical style that Dion would utilize in the future: sweeping, classically influenced ballads with soft instrumentation. Both a critical and commercial hit, the song became her second U.S. top ten single, and won the Academy Award for Best Song, and the Grammy Award for Best Pop Performance by a Duo or Group with Vocal. She would later regain her fan base at the Félix Award show, where, after winning" English Artist of the Year ", she openly refused to accept the award. She asserted that she was--and would always be--a French, not an English, artist. Apart from her commercial success, there were also changes in Dion's personal life, as Angélil, who was twenty-six years her senior, transitioned from manager to lover. However, the relationship was kept a secret as they both feared that the public would find their relations inappropriate.

In 1993, Dion announced her feelings for her manager by declaring him "the colour of her love" in the dedication section of her third Anglophone album 'The Colour of My Love'. However, instead of criticizing their relationship as Dion had feared, fans embraced the couple. Eventually, Angélil and Dion married in an extravagant wedding ceremony in December 1994, which was broadcast live on Canadian television.

As it was dedicated to her manager, the album's motif focused on love and romance. It became her most successful record up to that point, selling more than six million copies in the U.S., two million in Canada, and peaking at number-one in many countries. The album also spawned Dion's first U.S., Canadian, and Australian number-one single "The Power of Love"(a remake of Jennifer Rush's 1985 hit), which would become her signature hit until she reached new career heights in the late 1990s. while the album was eventually certified five-times platinum for two-million copies sold.

Dion kept to her French roots and continued to release many Francophone recordings between each English record. Generally, they achieved more credibility than her Anglophone works. The single also reached the top ten in the UK and Ireland, a rare accomplishment for a French song. The second single off the album, "Je sais pas", reached number one on the French Singles Chart as well and was certified Silver in France. These songs would later become "If That's What It Takes" and "I Don't Know" on Dion's next English album, 'Falling into You'.

During the mid-1990s, Dion's albums continued to be constructed on the basis of melodramatic ballads, but also with up-tempo pop and adult contemporary themed music. She collaborated with talented craftsman such as Jim Steinman and David Foster who helped her devise more adult contemporary songs.. While critical reviews fluctuated, Dion's releases performed increasingly well on the international charts, and in 1996 she won the World Music Award for "World's Best-selling Canadian Female Recording Artist of the Year" for the third time. By the mid-1990s, she had established herself as one of the best-selling artists in the world.

'Falling into You' (1996), Dion's fourth Anglophone album, presented the singer at the height of her popularity, and showed a further progression of her music. The singles encompassed a variety of musical styles. The title track "Falling into You" and "River Deep, Mountain High"(a Tina Turner cover) made prominent use of percussion instruments; "It's All Coming Back to Me Now"(a remake of Jim Steinman's song) and a remake of Eric Carmen's "All by Myself" kept their soft-rock atmosphere, but were combined with the classical sound of the piano; and the number-one single "Because You Loved Me", which was written by Diane Warren, was a ballad that served as the theme to the 1996 film 'Up Close & Personal'.

'Falling into You' garnered career-best reviews for Dion. While Dan Leroy wrote that it was not very different from her previous work, and Stephen Holden of 'The New York Times' and Natalie Nichols of the 'Los Angeles Times' wrote that the album was formulaic, other critics, such as Chuck Eddy of 'Entertainment Weekly', Stephen Thomas Erlewine of 'AMG' and Daniel Durchholz, lavished the album as "compelling", "passionate", "stylish", "elegant" and "remarkably well-crafted". 'Falling Into You' became Dion's most critically and commercially successful album: it topped the charts in many countries and became one of the best-selling albums of all time. In the United States, the album reached number-one, and was later certified 11x Platinum for over 11 million copies shipped. In Canada, the album was certified diamond for over one million copies shipped. The IFPI certified 'Falling into You' 9x Platinum, an accolade that has been given to only two other albums in history, with one of the two being Dion's own album, 'Let's Talk About Love'. The album also won Grammy Awards for Best Pop Album, and the academy's highest honor Album of the Year. Dion's status on the world stage was further solidified when she was asked to perform "The Power of the Dream" at the opening ceremonies of the 1996 Atlanta Olympic Games. In March 1996, Dion launched the Falling into You Tour in support of her new album, giving concerts around the world for over a year.

Dion followed 'Falling into You' with 'Let's Talk About Love' (1997), which was publicized as its sequel. The recording process took place in London, New York City, and Los Angeles, and featured a host of special guests, such as Barbra Streisand on "Tell Him"; the Bee Gees on "Immortality"; and world-renowned tenor Luciano Pavarotti on "I Hate You Then I Love You". Other musicians included Carole King, Sir George Martin and Jamaican singer Diana King, who added a reggae tinge to "Treat Her Like a Lady". Critic Stephen Erlewine wrote "Given that so many talented craftsmen worked on 'Let's Talk About Love', it makes sense that a number of the cuts succeed according to adult contemporary terms -- they are predictably sweeping showcases for Dion's soaring, technically skilled voice. As usual, the singles ... shine the most brilliantly, but even the filler is immaculately produced." As with 'Falling into You', 'Let's Talk About Love' was a major success for Dion, reaching number-one all over the world, attaining platinum status in twenty-four sales territories, and becoming Dion's fastest selling album of her career. In the United States, the album topped the chart in its seventh week of release, and was later certified 10x Platinum in the U.S. for over 10 million copies shipped. In Canada, the album sold 230,212 copies in its first week of release, which became, and still is, a record. It was eventually certified diamond in Canada for over 1 million copies shipped. The most successful single from the album became the classically influenced ballad" My Heart Will Go On ", which was written and composed by James Horner and Will Jennings, and produced by Horner and Walter Afanasieff. as well as winning the Academy Award and Golden Globe for Best Original Song. The song also gave Dion two Grammy Awards for" Best Female Pop Vocal Performance "and the most coveted" Record of the Year ", (the song itself won four awards, but two were presented to the songwriters)." My Heart Will Go On "and" Think Twice " made her the only female artist in the UK to have two singles to sell more than a million copies. In support of her album, Dion embarked on the Let's Talk About Love Tour between 1998 and 1999.

Dion ended the 1990s with three more extremely successful albums--the Christmas album 'These Are Special Times' (1998), the French-language album, 'S'il suffisait d'aimer', and the compilation album 'All the Way... A Decade of Song' (1999). On 'These Are Special Times', Dion became more involved in the writing process. She co-wrote the song, 'Don't Save It All For Christmas Day' along with Ric Wake and Peter Zizzo. The album was her most classically influenced yet, with orchestral arrangements found on virtually every track. "I'm Your Angel", a duet with R. Kelly, became Dion's fourth U.S. number one single, and another hit single across the world. 'All the Way... A Decade of Song' drew together her most successful hits coupled with seven new songs, including the lead off single "That's the Way It Is", a cover of Roberta Flack's "The First Time Ever I Saw Your Face", and "All the Way", a duet with Frank Sinatra. 'All the Way... A Decade of Song' also topped the charts in the UK, Canada, and Australia. Her last French-language studio album of the 1990s, 'S'il suffisait d'aimer', was very successful as well, topping the charts in every major French-speaking country, including France, Switzerland, Belgium Wallonia, and Canada. By the end of the 1990s, Celine Dion had sold more than 100 million albums worldwide, and had won a slew of industry awards. Her status as one of the music industry's biggest pop divas was further solidified when she was asked to perform on VH1's 'Divas Live' special in 1998, with superstars Aretha Franklin, Gloria Estefan, Shania Twain and Mariah Carey. That year she also received two of the highest honors from her home country: "Officer of the Order of Canada for Outstanding Contribution to the World of Contemporary Music" and "Officer of the National Order of Quebec".

During this time, the pop-rock genre that was most noticeable in her earlier releases, was replaced by a more adult contemporary feel. Some critics, like Elysa Gardner and Jose F. Promis, praised her vocals during this period, describing it as a "technical marvel". However, others, like Steve Dollar, who reviewed 'These Are Special Times', stated that Dion is a " vocal Olympian for whom there ain't no mountain--or scale--high enough."

After releasing and promoting thirteen albums during the 1990s, Dion stated that she needed to settle down, and announced on her latest album 'All the Way... A Decade of Song', that she needed to take a step back from the spotlight and enjoy life. Angélil's diagnosis with throat cancer also prompted her to hiatus. While on break, Dion was unable to escape the spotlight. In 2000, the 'National Enquirer' published a false story about the singer. Brandishing a picture of Dion and her husband, the magazine misquoted Dion, printing the headline, "Celine -- 'I'm Pregnant With Twins!'" Dion later sued the magazine for more than twenty million dollars. The editors of the 'Enquirer' printed an apology and a full retraction to Dion in the next issue, and donated money to the American Cancer Society in honor of Dion and her husband. A year after the incident, after undergoing fertility treatments, Dion gave birth to a son, René-Charles Dion Angélil, on January 25, 2001 in Florida. Following the September 11, 2001 attacks, Dion returned to the music scene, and in a televised performance sang" God Bless America "at the benefit concert America: A Tribute to Heroes. Chuck Taylor of 'Billboard' wrote," the performance... brings to mind what has made her one of the celebrated vocalists of our time: the ability to render emotion that shakes the soul. Affecting, meaningful, and filled with grace, this is a musical reflection to share with all of us still searching for ways to cope." In December 2001, Dion published her autobiography, 'My Story, My Dream' which chronicled her rags to riches story.

Dion's aptly titled 'A New Day Has Come', released in March 2002, ended her three-year break from the music industry. The album was Dion's most personal yet, and established a more mature side of Dion with the songs "A New Day Has Come", "I'm Alive", and "Goodbye's (The Saddest Word)", a change that resulted from her new-found maternal responsibilities, because, in her own words," becoming a mother makes you a grown-up."She stated,"'A New Day Has Come', for Rene, for me, is the baby. It has everything to do with the baby...That song "A New Day Has Come" represents very well the mood I'm feeling right now. It represents the whole album."'A New Day Has Come' debuted at number one in over 17 countries, including the United Kingdom and Canada. In the United States, the album debuted at number one on the Billboard 200, with first week sales of 527,000 copies; marking her first number one debut on the chart. It was eventually certified 3x Platinum in the United States, and 6x Platinum in Canada.

While the album was commercially successful, critical reviews suggested that it was "forgettable" and the lyrics were "lifeless". Both Rob Sheffield of 'Rolling Stone' magazine, and Ken Tucker of 'Entertainment Weekly', stated that Dion's music had not matured during her break, and classed her music as trite and mediocre. Sal Cinquemani of 'Slant' magazine called the album " a lengthy collection of drippy, gooey pop fluffer-nutter." The first single off the album, 'A New Day Has Come' peaked at #22 on the Billboard Hot 100 charts, being an airplay-only release. On the Hot Adult Contemporary Tracks, however the song spent 21 consecutive weeks at number 1, breaking the record for the longest span at the top. The previous record holders were Phil Collins' 'You'll Be in My Heart' and Dion's own 'Because You Loved Me,' both of which lasted nineteen weeks at number 1. During 2002, she performed for many benefit concerts, the famous VH1 Divas Live, a concert to benefit the VH1 Save The Music Foundation, alongside Cher, Anastacia, Dixie Chicks, Mary J. Blige, Whitney Houston, Cyndi Lauper, and Stevie Nicks.

Drawing inspiration from personal experiences, Dion released 'One Heart' (2003), an album that represented her appreciation for life. The album largely consisted of dance music--a deviation from the soaring, melodramatic ballads, for which she had once been given mixed reception. Although the album achieved moderate success, 'One Heart' was met with mixed criticism, and words such as "predictable" and "banal" appeared even in the most lenient reviews. A cover of the 1989 Cyndi Lauper hit "I Drove All Night", released to launch her new advertising campaign with Chrysler, incorporated dance-pop and rock and roll. The advertising deal itself, however was met with mixed criticism, with some stating that Dion was trying to please her sponsors. However, people like Bonita Stewart, who was the director of Chrysler Group Marketing Communications stated that "Chrysler was taken by how her appeal crossed ethnic lines." She also added," She brings sophistication, refinement, romance and passion to the brand."

After 'One Heart', Dion released her next English Language studio album, 'Miracle' (2004). 'Miracle' was a multimedia project conceived by Dion and photographer Anne Geddes, and had a theme centering on babies and motherhood. The album was filled with lullabies and other songs of maternal love and inspiration, the two most popular being covers of Louis Armstrong's "What a Wonderful World" and John Lennon's "Beautiful Boy". The reviews for 'Miracle' were mixed. Stephen Thomas Erlewine of Allmusic.com gave the album three of out five stars, stating, "The worst you can say about the record is that there are no surprises, but the audience for this record doesn't want surprises; they want comfort, whether it arrives in polished music or artsy photos of newborns, and Miracle provides both, which makes it appealing for those expectant or new mothers in Dion's audience. Chuck Arnold of 'People' Magazine, however, labeled the album as excessively sentimental, while Nancy Miller of 'Entertainment Weekly' opined that" the whole earth-mama act is just opportunism, reborn ". 'Miracle' debuted at number four on the 'Billboard' 200 chart and number one in Canada , and was eventually certified platinum by the RIAA.

The Francophone album '1 fille & 4 types' ('1 Girl & 4 Guys', 2003), fared better than her first two releases, and showed Dion trying to distance herself from the "diva" image. She recruited Jean-Jacques Goldman, Gildas Arzel, Eric Benzi, and Jacques Veneruso, with whom she had previously worked on two of her best selling French albums 'S'il suffisait d'aimer' and 'D'eux'. Labeled "the album of pleasure" by Dion herself, the cover showed Dion in a simple and relaxed manner, contrary to the choreographed poses usually found on her album covers. The album achieved widespread commercial success in France, Canada, and Belgium where it reached number one. In France, the album debuted at number one and was later certified 2x platinum after selling over 700,000 copies. Critic Stephen Erlewine of 'All Music' wrote that Dion's vocals "are back at top of their game: gone are the majority of the near-patented diva hysterics and howls and arriving in their place is a voice that values dynamics over acrobatics. The band is stripped down (comparatively) to its bare essentials, taking Dion into relatively unfamiliar territories such as country-pop and folk, and she proves herself more than up to the task of delivering top-notch performances every time" and that the singer was " getting back to pop basics and performing at a level unheard in a while."

Though her albums were commercially successful, they did not achieve the sales or the reception of her previous works. Albums like 'The Collector's Series, Volume One' (2000), and 'One Heart' (2003) did not perform as well critically. However, by 2004, Dion had accumulated sales of more than 175 million albums worldwide, and received the Chopard Diamond Award from the World Music Awards for her achievements. According to the official World Music Awards website, the award is rare; it's not even "presented every year" and an artist can only be presented with the award for selling " over 100 million albums during their career."

In early 2002 Dion had announced a three-year, 600-show contract to appear five nights a week in an entertainment extravaganza, 'A New Day...', at The Colosseum at Caesars Palace, Las Vegas. She conceived the idea for the show after seeing 'O' by Franco Dragone early in her break from recording, and began on March 25, 2003, in a 4,000-seat arena designed for her show. The show, put together by Dragone, was a combination of dance, music, and visual effects. It included Dion performing her biggest hits against an array of dancers and special effects. Reviewer Mike Weatherford felt that, at first, Dion was not as relaxed as she should be, and at times, it was hard to find the singer among the excessive stage ornamentations and dancers. However, he noted that the show had become more enjoyable, due to Dion's improved stage-presence and simpler costumes. Ticket prices averaged $135.33. The show was choreographed by Mia Michaels, who is a world renowned choreographer. According to 'Pollstar', Dion sold 322,000 tickets and grossed US$43.9 million in the first half of 2005, and by July 2005, she had sold out 315 out of 384 shows.

By the end of 2005, Dion grossed more than US$76 million, placing sixth on 'Billboard's Money Makers list for 2005'. 'A New Day...' was the 6th biggest selling tour in America in 2006. Because of the show's success, Dion's contract was extended into 2007 for an undisclosed sum. On January 5, 2007 it was announced that the show would end on December 15, 2007, with tickets for the period after October 2007 having gone on sale from March 1. During its entire run, the show accumulated a total gross of $400 million, while being seen by nearly 3 million fans. The 'Live in Las Vegas - A New Day...' DVD was released on December 10, 2007 in Europe and the following day in North America.

Dion's latest French language album, 'D'elles' '(About Them)', released on May 21, 2007, debuted at the top of the Canadian album charts, selling 72,200 copies in its first week. It marked her tenth number-one album in the Sound Scan era, and her eighth to debut at the top position. In Canada, the album has been certified 2x platinum, and within the first week had already shipped half a million units worldwide. 'D'Elles' also reached No. 1 in France and Belgium. The first single "Et s'il n'en restait qu'une (je serais celle-là)"(meaning" And If There Was Only One Woman Left (I Would Be That One)") debuted at the top of the French singles chart a month earlier. She released her latest English album 'Taking Chances' on November 12 in Europe, and on the 13th in North America. Her first English studio album since 2003's 'One Heart', it features pop, R&B, and rock inspired music. Dion has collaborated with John Shanks, ex- Evanescence guitarist Ben Moody, as well as Kristian Lundin, Peer Astrom, Linda Perry, Japanese singer Yuna Ito, and R&B singer-songwriter Ne-Yo. Dion stated," I think this album represents a positive evolution in my career ... I'm feeling strong, maybe a little gutsier than in the past, and just as passionate about music and life as I ever was." She launched her year-long worldwide Taking Chances Tour on February 14, 2008 in South Africa, performing 132 dates in stadiums and arenas across five continents.

Taking Chances Tour was a great success in the United States, reaching the Number 1 spot on the 'Billboard' Boxscore and sold out every concert in the U.S. and Canada. In addition, she appeared on Idol Gives Back for a second year in a row. Céline Dion was nominated for 6 Juno Awards in 2008, leading the group of Canadians to receive this honour. Dion has added to her 53 previous nominations. Her nominations included Artist of the Year, Pop Album of the Year (for 'Taking Chances'), Francophone Album of the Year (for 'D'elles') and Album of the Year (for both 'Taking Chances' and 'D'elles'). The following year, Dion was nominated for 3 Juno Awards including the Fan Choice Award, Song of the Year (for 'Taking Chances'), and Music DVD of the Year (for 'Live in Las Vegas -- A New Day...')

On August 22, 2008, Celine Dion presented a free show, exclusively francophone, outside on the Plains of Abraham, in Quebec City, Canada, for the 400th anniversary of Quebec City. The celebration gathered approximately 490,000 people (total with TV broadcast). The concert, called 'Céline sur les Plaines', was released on DVD on November 11, 2008 in Quebec and was released on May 20, 2009 in France. The end of October saw the worldwide release of her first ever comprehensive English greatest hits album called 'My Love: Essential Collection', available in two different album formats.

In May 2009, Celine Dion was named the 20th best-selling artist of the decade in the United States and the 2nd best selling female artist of the decade in the United States, selling an estimated 17.57 million albums. In June 2009, 'Forbes Magazine' reported that Celine Dion earned $100 million during 2008, second only to Madonna.

In December 2009, Pollstar announced that Celine Dion was the best-selling solo touring act of the decade and the second best-selling touring act of the decade, only to the Dave Matthews Band. Dion grossed $522.2 million during the decade, a large sum of that coming from her five year residence at Caesars Palace. further stating that she was due to give birth in May 2010. However, in November 2009, it was announced that her pregnancy had failed, but was still trying for another child via fertility treatments.

' USA Today' announced that Dion will be releasing a documentary film about her 'Taking Chances Tour'. It will be titled, 'Celine: Through the Eyes of the World' and will be released into theatres on February 17, 2010. The documentary will show behind-the-scenes footage of Dion both onstage and offstage, along with footage of Dion with her family as they traveled with her. The largest haul came in from ticket sales, totaling $522.2 million. A public online survey asked responders to vote for who they believe deserved the above-mentioned accolade. The five performers sang Jackson's Earth Song, in front of a 3D screen.

In an interview with 'People Magazine' published in February 2010, Dion announced that she will be returning to Caesar's Palace in Las Vegas for a three-year residency for seventy shows a year, beginning 15 March 2011. She stated that the show will feature, "all the songs from my repertoire that people want to hear" and will contain a selection of music from classic Hollywood films. Dion also announced that she is working on two new French and English albums, and will be collaborating with Academy Award-winning musician, AR Rahman, who is writing two new songs for her.Dion grew up listening to the music of Aretha Franklin, Michael Jackson, Carole King, Anne Murray, Barbra Streisand, and the Bee Gees, all of whom she would eventually collaborate with. Dion has also stated she grew up listening to artists such as Janis Joplin, the Doobie Brothers, and Creedence, but never got the chance to sing their genre of music. Her music has been influenced by numerous genres, including pop, rock, gospel, R&B and soul, and her lyrics focus on themes of poverty, world hunger, and spirituality, with an overemphasis on love and romance. After the birth of her child, her work also began to emphasize maternal bond and brotherly love.

Dion has faced considerable criticism from many critics, who state that her music often retreats behind pop and soul conventions, and is marked by excessive sentimentality. According to Keith Harris of 'Rolling Stone' magazine, " Dion's sentimentality is bombastic and defiant rather than demure and retiring....she stands at the end of the chain of drastic devolution that goes Aretha-Whitney-Mariah. Far from being an aberration, Dion actually stands as a symbol of a certain kind of pop sensibility--bigger is better, too much is never enough, and the riper the emotion the more true." Dion's francophone releases, by contrast, tend to be deeper and more varied than her English releases, and consequently have achieved more credibility.

Many critics have stated that Dion's involvement in the production aspect of her music is fundamentally lacking, which results in her work being overproduced Also, she helped to compose many of her earlier French songs, and had always tried to involve herself with the production and recording of her albums. On her first English album, which she recorded before she had a firm command of the English language, she expressed disapproval of the record, which could have been avoided if she had assumed more creative input.

Dion is often the subject of media ridicule and parody, and is frequently impersonated on shows like 'MADtv', 'Saturday Night Live', 'South Park', 'Royal Canadian Air Farce' and 'This Hour Has 22 Minutes' for her strong accent and on-stage movements. However, Dion has stated that she is unaffected by the comments, and is flattered that people take the time to impersonate her. After her interview, she stated, " When I do interviews with Larry King or the big TV shows like that, they put you on the spot, which is very difficult. I do have an opinion, but I'm a singer. I'm not a politician."

Celine Dion possesses a five-octave vocal range, and is often regarded as one of pop music's most influential voices. In a countdown of the "22 Greatest Voices in Music" by 'Blender Magazine' and MTV, she placed ninth (sixth for a female), and she was also placed fourth in 'Cove' magazine's list of "The 100 Outstanding Pop Vocalists". Dion is often compared to Mariah Carey for her vocal style and to her idol Barbra Streisand for her voice. Upon her debut, many critics had welcomed her restrained vocal inflections, and she was praised for her technical virtuosity and intensity. Describing her voice, 'The New York Times' writes, "Ms. Dion...is a belter with a high, thin, slightly nasal, nearly vibratoless soprano and a good-sized arsenal of technical skills. She can deliver tricky melismas, produce expressive vocal catches and sustain long notes without the tiniest wavering of pitch. And as her duets ... have shown, she is a reliable harmony voice".

Charles Alexander of 'Time' writes, "The power behind the song ... is her bring-the-house-down voice, which turns an old, schmaltzy ballad into a soaring pop aria. That voice glides effortlessly from deep whispers to dead-on high notes, a sweet siren that combines force with grace". Critic Stephen Thomas Erlewine of 'All Music' writes that Dion sings with "natural vocal charm" and "effortless elegance".

In her French repertoire, Dion adorns her vocal lines with more nuances and modulations, and the emotional intensity is "more tender and intimate". According to Luc Plamondon, who wrote several songs for her, there are three singers; the Quebecoise, the French, and the English.

Praised for her vocal restraint at the beginning of her career, Dion's vocal performances came to resemble more closely those of her contemporaries, especially Whitney Houston and Mariah Carey, and she was heavily criticized for oversinging and for lacking the emotional intensity that once was a part of her earlier work.Dion became an entrepreneur with the establishment of her franchise restaurant '"Nickels"' in 1990. She has since divested her interests in the chain and is no longer affiliated with 'Nickels' as of 1997. She also has a range of eyewear and a line of perfume, manufactured by Coty, Inc. In October 2004, Canada's national air carrier Air Canada hired Dion as part of the new promotional campaign as the airline unveiled new in-flight service products and new aircraft livery. "You and I", the theme song sung by Dion, was written by advertising executives working for Air Canada. In 2003, Dion signed a deal with Coty to release 'Celine Dion Parfums'. In April 2009, Dion also released her sixth fragrance, 'Chic'. Since its creation in 2003, 'Celine Dion Parfums' have made over $500 million in retail sales.

Dion has actively supported many charity organizations worldwide. She has promoted the Canadian Cystic Fibrosis Foundation (CCFF) since 1982 and became the foundation's National Celebrity Patron in 1993. She has an emotional attachment to the foundation; her niece Karine succumbed to the disease at the age of sixteen. In 2003, Dion joined a number of other celebrities, athletes and politicians, including Josh Groban and Yolanda Adams, to support "World Children's Day", a global fundraising effort sponsored by Mc Donald's. The effort raised money from more than 100 countries and benefited many orphanages and children's health organizations. Dion has also been a major supporter of the T.J. Martell Foundation, the Diana Princess of Wales Memorial Fund, and many health and education campaigns. She also donated $1 million to the victims of Hurricane Katrina, and held a fund-raising event for the victims of the 2004 Asian Tsunami, raising more than $1 million. After the 2008 Sichuan earthquake, Celine Dion donated $100,000 to China Children & Teenagers' Fund and sent a letter to show her consolation and support.

In 1999, Celine Dion received a star on Canada's Walk of Fame and also a star on the Hollywood Walk of Fame in January 2004. She dedicated her star to her father, who died the month prior. In 2007, Celine Dion was ranked by 'Forbes Magazine' as the 5th richest woman in entertainment with an estimated net worth of US$250 million. She also received France's highest award, the Légion d'honneur, in May 2008. In August 2008, she received an honorary doctorate in music from the Université Laval in Quebec City.