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Rooney Mara told Allure for their January 2012 issue that she and sister Kate Mara are very different people.
'[My sister and I] are just completely different as people,' Mara told the magazine. 'We haven't found anything that we'd want to do together yet. But we do want to [work together] at some point.'
(Pictured: Kate Mara appears in a scene from the 2010 film 'Happythankyoumoreplease.')
(Paper Street Films / Tom Sawyer Entertainment / Back Lot Pictures)