Cheryl Cole denies boob job claims

Cheryl Cole has denied claims that she has had a boob job.

Fans began speculating that the singer had undergone cosmetic surgery after she wore a series of revealing outfits on her tour.

Cheryl Cole performing live in concert at the Odyssey Arena Belfast, Northern Ireland

Cheryl Cole performing live in concert at the Odyssey Arena Belfast, Northern Ireland - 03.10.12

Cole kicked off the 'A Million Lights' tour at Belfast's Odyssey Arena on Wednesday (October 3) and performed at The O2 in Dublin last night (October 4).

Concert-goers took to Twitter to discuss Cole's enhanced look, but a plastic surgeon told the Daily Star it was "very hard to tell" if she'd had any work done.

A spokesman for Cole, who faced similar rumours when she briefly joined The X Factor USA last year, insisted she "has not" had a boob job.

The Girls Aloud star releases her autobiography Cheryl: My Story on October 11.

Photo gallery - Cheryl's 'A Million Lights' tour: