In CosmoGirl!'s August issue, Clarkson, reveals that she became bulimic after she was passed over for a role in her high school musical. "I thought...If I came back and I'm cuter and thinner...then I'll get the role."

For six months, Clarkson was bulimic, until a friend discovered her problem. "One of my guy friends caught on to it, and I just felt so ashamed and embarassed," she tells the mag. "I literally went cold turkey and snapped out of it."

Since her bout with bulimia in high school, Clarkson has worked hard to foster a positive body image, for herself and others. "I've got a butt, I'm Greek- I can't help that. And I think it's good for people to see normal."

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