Top 10 Most Extreme Things Actors Have Done To Prepare For Roles

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6. Renee Zellweger in Bridget Jones’s Diary

Renee Zellweger has been known for her Bridget Jones films for the last fifteen years, and not only did the actress have to completely transform her body to play an unlucky-in-love girl, she had to do it three times!

In September 2015 Renee was in London, filming the third installment of the film’s franchise and 14 years after the first Bridget Jones film was released she had to put on the extra weight again.

The actress gained 20 pounds for each Bridget Jones film and she did it by consuming 4,000 calories a day to pack on the pounds.

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Needless to say, after the shooting was complete Zellweger put her body through strict weight loss and diet programs, and the yo-yo dieting has certainly taken a toll on the Oscar winner.