The 'I'm Outta Love' singer has decided to legally end her marriage to bodyguard Wayne Newton, citing irreconcilable differences, according to website RadarOnline.com.

The couple – who had no children - married in April 2007, but didn't sign a pre-nuptial agreement.

Anastacia – who overcame breast cancer in 2003 – had previously spoken of her happiness at being married to Wayne but admitted it may not last forever.

She said: 'There is a totally different vibe being married. I have wonderful security and hope we'll grow old together. I'll be sitting there with my crows feet and about two feet shorter. I really love being married.

'I'm not claiming I'm going to make it forever. I'm just saying that I'm going to try. We both have no idea what the situation is going to be like in ten years.'

The 41-year-old star also said she and Wayne had decided not to have kids together as she was happy being a stepmother to his two sons.

She said: 'Wayne and I have chosen not to have children. My husband has two boys already that I've grown very close to. It's an aspect of my life that I've chosen not to explore.'