A while back, it was announced that Katy Perry would join the ranks of Miley Cyrus and Justin Bieber and be the subject of her own 3D "documentary-style film." And, it turns out, it wasn't a dream! The singer revealed the name of her doc-to-be while on the red carpet at Nickelodeon Kids Choice Awards. Perry told E!'s Kelly Osbourne that the movie's title is to be "Katy Perry: Part of Me." She also hinted at the possibility of a Fourth of July release date, when she urged fans to "go and see...