Movie Trailers - Movies Blog     Sure, Robert Pattinson may have chilled with Katy Perry on the set of her3-D flick, "Katy Perry: Part of Me," but that doesn't mean the "Cosmopolis" stud is all studied up on the candy-coated pop star. In fact, when he weighed in on the biggest race at the 2012 Video Music Awards, Video of the Year, it was two other equally dazzling ladies who had his vote.   "…