Robert Pattinson brought his Breaking Dawn Part 2 press tour to Late Night With Jimmy Fallon last night. It's been a busy few days for Robert with stops on The Today Show and Live With Kelly and Michael. Kristen Stewart's been plenty busy too. She has visited the same programs to talk up the Twilight finale, but she's also doing double duty promoting On the Road. Last night, Kristen wore a leather LBD for a special screening of her big screen adaptation of the Jack Kerouac novel. Robert, meanwhile, chatted with Jimmy Fallon about his last go-round as Edward Cullen. They also had a bit of fun — Jimmy and Robert engaged in a water war!