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The best celebrity weight loss stories of 2011

By: Michael d'Estries on Dec. 29, 2011, 8:33 a.m.
Jonah Hill arrives at the 'Moneyball' world premiere in 2011

Photo: Kathy Hutchins/Shutterstock

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Jonah Hill

Jonah Hill, 27, has spent much of this movie career playing affable, chubby characters — so he shocked people when he showed off a new, slim figure. The comedian reportedly hired a nutritionist and trainer to assist with helping him lose more than 40 pounds. "I wouldn’t say it’s the most fun endeavor I’ve ever took on in my life, but it’s important,” he told the L.A. Times. “And I’m enjoying it. If I eat something unhealthy now, I kind of feel a little weird and my body hurts."