Celeb Weight-Loss Winners

See how Halle Berry, Jennifer Lopez and more hit the gym and shaped up for '09!

  • BRITNEY SPEARS photo | Britney Spears

Credit: Robert Galbraith/Reuters/Landov; Brian Zak/Sipa

Updated: Friday Jan 30, 2009 | 06:00 AM EST

BRITNEY SPEARS

To get her famous abs back, Spears, 27, hit the gym at least 3 days a week for aerobics, jogging and weight training with a trainer.