Kristen Stewart goes topless in a few scenes of her other upcoming film "On the Road." The 22-year-old is trying to break the mold of her most famous role, the sweet and good-natured Bella Swan from the 'Twilight" film series by stripping down for the beatnik film. Stewart plays Marylou a freespirit in the hip Beat generation who sleeps with not one, but two men she goes on a road trip with.