Cheryl Fernandez-Versini's ex-husband Jean-Bernard wants her to return his late mother's ring

A source told the MailOnline: "He gave her the jewellery to celebrate 12 months together. It belonged to his mother. It is now the ten-year anniversary of her death and he desperately wants it back, but Cheryl still hasn't posted it and has made no effort to return it. He is pretty upset and would like it back."

However, a friend of the 33-year-old beauty is adamant she isn't deliberately withholding the precious ring and has just simply forgotten to return it to him.

An insider explained: "Since they split up last year, Cheryl has not worn it.

"She put it in a safe and totally forgot about it because he has never asked her for it.

"Cheryl finds it very weird that this has just come to light now but she will send the ring over to her lawyers immediately."

The 'Call My Name' hitmaker filed for divorce shortly after their split in August last year and, according to the court documents obtained by The Sun newspaper, she blamed the French hunk for her dramatic weightloss during their 18-month marriage.

The brunette star - who will now be known as just Cheryl - claimed her now ex-husband's "unreasonable behaviour" caused her "stress" and affected her health.

The pair tied the knot on Macaroni Beach in Mustique on July 7, 2014, following just three months of dating after meeting at the Cannes Film Festival in France.

A few months after they split, Cheryl began dating One Direction star Liam Payne, 23, and the loved-up pair are now said to be expecting their first child together.

A source said recently: "Last year was a terrible year and she's a completely different person now. She's relieved she can finally move on with her life."