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Vicki Gunvalson, Tori Spelling, and More Celebrities Who’ve Gone on Extreme Diets to Lose Weight

Losing weight isn't easy, especially if you're trying to drop the pounds fast. And while it's easy to assume that all celebrities have personal trainers who can help them out in a pinch, many stars choose to follow dangerous and extreme diets.

RELATED: Melissa McCarthy Looks Thinner Than Ever — See Her Weight Loss Transformation

Click through the gallery to see shocking ways celebs have lost major weight.