Kelly Clarkson has admitted that she suffered from bulimia as a teenager.

The 'Since U Been Gone' star was gripped by the eating disorder after she failed to win a role in her high school musical.

She told Cosmo Girl: "I thought if I came back and I'm cuter and thinner, then I'd get the role. I became bulimic for the next six months. One of my guy friends caught on to it, and I just felt so ashamed and embarrassed. I literally went cold turkey and snapped out of it."

Clarkson insisted that she is now proud of her curvaceous figure, saying: "I've got a butt. I'm Greek - I can't help that. And I think it's good for people to see normal."