Katy Perry's Part of Me is set to hit theaters on July 5, and it's no secret the singer features her messy split with ex-husband Russell Brand in the documentary. OK! NEWS: KATY PERRY 'PART OF ME' TRAILER RELEASED Russell and Katy called it quits last December after 14 months of marriage, and she hasn't been shy about telling the press why she chose to feature it in her new 3-D film. In fact, she expanded upon this telling Read More >>