Keira Knightley romance came to an end when her boyfriend Kaz James dumped her just weeks after they started dating.

According to reports, the Body-rockers star, James has already moved on since splitting from stunning Keira - and has been spotted cosying up to diva Mariah Carey and Donatella Versace’s niece, Francesca.

The singer reportedly met stunning Mariah at a star-studded bash in London. A source said, “The pair chatted for a while then Mariah slipped him her room number, a special password to get in and her mobile number. But when Kaz tried to dial the number later in the evening, her phone was off.”

James was also seen flirting with 23-year-old Francesca.

A source was quoted as saying, “They got on really well and continued partying at Kabaret’s Prophecy afterwards. Kaz was really laying on the charm and making a big show of pouring her glasses of Dom Perignon champagne.”

The insider added, “They were all over each other. One of his mates asked him whether Francesca was his new flame and Kaz just grinned and said, ‘I think so. Well, for tonight she is’. “They left the club at 2.30am and disappeared off to, er, get to know each other a bit better.”