Celeb Weight-Loss Winners

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

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MARIE OSMOND

By going on Nutri­System, Osmond, 49, lost 40 lbs. "I was a size 14 and I cut it down to a size 4!" she boasted. "I had been putting on 5 lbs. a year – it's so easy to do! So I decided to only buy healthy food: salads, fruit and veggies."