Stars Who Gained Weight for Roles (photos)

Rob McElhenney, the creator and a star of the FX series "It’s Always Sunny in Philadelphia," decided to pack on 50 pounds to make his character funnier this season, which premieres Sept. 14.

From Christian Bale’s 99-pound Batman gain to the 60-pound addition that got Ryan Gosling fired from a movie, see photos of actors who gained the most weight for roles.