Celebrity Yo-Yo Dieters

Kirstie Alley, the ultimate yo-yo-er, just announced another turn in her diet saga: 50 pounds shed. For some celebs, including Britney Spears, Tyra Banks, and 11 others, the battle of the bulge never ends.

Sarah Moga

Published Sep. 28 2010 6:38PM EDT 

Gallery: Celebrity Yo-Yo Dieters

Xtra Insight: Plus: The pros and cons of seven popular crash diets.

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Sarah Moga is a producer and writer based in New York City and Los Angeles.

Sarah Moga

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