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The 37-year-old actress posed with fans as she took a break from filming the picture, which stars Tom Hardy in the title role made famous by Mel Gibson.
We take a look back at other starlets who've braved going bald to bag a role - from Natalie Portman in V For Vendetta to Anne Hathaway in upcoming movie Les Misérables.
Anne Hathaway admitted she wept when she had her long locks cut off for her upcoming role in Les Misérables.
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