Snoop Dogg joins the singer onstage for a live performance of her summer anthem. By James Montgomery Katy Perry performs at the 2010 MTV Movie Awards Photo: Jeff Kravitz/ FilmMagic Well, there wasn’t any nudity , but that’s about the only thing Katy Perry didn’t pack into the first-ever TV performance of her new single “California Gurls” on Sunday at the 2010 MTV Movie Awards. A DayGlo m
