Weight Winners of 2008
Credit: Li Zheng/ChinaFotoPress/ZUMA Press; Frank Micelotta/Getty Images for AMA
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Beyonce
Sasha Fierce, indeed! The curvy 5-foot-6 singer, 27, has toned up, thanks to hourlong workouts up to five days a week with trainer Marco Borges. Knowles, who often works out in her home gym with hubby Jay-Z, 39, refuels with fruit, veggies and lean meats, and has a healthy attitude.