There’s no doubt that Katy Perry is popular, becoming the only artist ever to spend more than a year in the US Billboard Top 10 (although admittedly with different songs). Now she’s coming to cinemas with the concert movie/documentary, Part Of Me, which looks at her life and loves, as well as her music. Indeed fans are being offered the chance to be involved of the film, engaging with Perry’s Twitter account to help choose which songs Katy will sing, and weigh in on her wardrobe options for the film. The film will be out later this year, but you can see the trailer here and decide whether Katy Perry in 3D is something you need in your life.