#7: Beyoncé
For her role as soul singer Etta James in Cadillac Records, Beyoncé expanded her horizons – and her hips. "I gained almost 15 pounds," she says. "It was way easier – and tastier – than having to lose so much weight for Dreamgirls." Movies aside, she stays fit by swapping favorites like fried chicken and cookies for protein shakes and fish, and training five days a week.
