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25 Shocking Celebrity Weight Changes

A look at fad diets celebrities have used to shed or gain weight fast.
renee-zellweger

Credit: Getty Images

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Renee Zellweger

To play the classic, awkward thirtysomething role of Bridget Jones, actress Renee Zellweger, now 44, gained 20 pounds and went from a size 4 to a size 14.

Perhaps more shocking was her post-Bridget Jones slim down. She dieted to lose the weight she had put on, and continued to lose even after returning to her healthy size 4. Constant weight fluctuations, like Zellweger's, can make it harder for dieters to lose pounds and keep them off in the long run.

Next: Valerie Bertinelli

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