Mariah Carey has sparked rumours she is dating a billionaire.

The 'Without You' hitmaker - who is in the process of divorcing from Nick Cannon - was spotted holding hands with James Packer as they enjoyed an ''extended vacation'' in Capri, Italy.

The new couple reportedly met through their mutual friend Brett Ratner, according to gossip website TMZ.

Whilst Mariah appears to have moved on from Nick - with whom she has four-year-old twins Monroe and Moroccan - the 'America's Got Talent' host previously admitted that he would ''never'' rule out getting back together with Mariah.

Discussing if the pair could get back together again, he said: ''Um, yeah, you can never say never.''

It was previously claimed that Nick had asked for $30 million in their divorce settlement.

An insider said: ''Mariah was willing to give Nick $10 million but he said 'hell no' and demanded $30 [million]. Mariah says it is what they agreed to in the prenup before they got married.

''Mariah kept telling Nick she was not going to give him a penny more than $10 million. He told her he could write a book and get $30 million and much more for a movie deal for all of the crap she put him through over the years.

''Mariah told Nick nobody cares what he has to say and told him to take it or leave it because that's it - not a penny more. He says she is being unreasonable so he has to do what he has to do.''