Michelle Williams Gained 15 Lbs. for Role

Michelle Williams and Ryan Gosling

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updated 11/30/2010 AT 11:00 AM ET

originally published 12/05/2010 AT 10:00 AM ET

Michelle Williams and Ryan Gosling found themselves in an unusual rivalry while filming Blue Valentine – seeing who could gain the most weight for their roles.

“She ended up winning. She gained about 15, 16 pounds. He gained 14,” the film’s director, Derek Cianfrance, told PEOPLE at Monday’s Gotham Independent Film Awards sponsored by Euphoria Calvin Klein.

“Michelle was eating a pint of ice cream for breakfast and dinner and avocado sandwiches all day. She wanted to do it. She talked about her character having a certain self-hatred.”


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