Photo SpecialStars' Diet Secrets

BEYONCé

Growing up, Beyoncé, 23, was "kind of a chubby kid," says mom Tina Knowles. These days, the Grammy winner tries to eat mostly chicken and vegetables and avoids most carbs. Once in a while, she'll sneak in her favorite treats – fries and popcorn shrimp. To keep her curvy body bootylicious, she "runs for miles and miles" on a treadmill or outside, says Destiny's Child pal Kelly Rowland.