Katy Perry: Part of Me (advertised as Katy Perry: Part of Me 3D) is an upcoming 2012 3D documentary-concert film centering on singer Katy Perry.

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It will be released in the United States, Canada, United Kingdom and Ireland on July 5, 2012. According to the official website, the film received a «PG rating for some suggestive content, language, thematic elements, and brief smoking».

This film tells the story of the trajectory of Perry's career as gospel singer Katheryn Hudson until the present day as pop singer and global superstar Katy Perry, bearing testimony from Katy (real name Katheryn) about her childhood, talking about the Teenage Dream era, with scenes from backstage of her last world tour while trying to take time to resolve personal problems, including her divorce from British comedian Russell Brand. The interim scenes document her last world tour, the California Dreams Tour, and were recorded on November 23, 2011 at Staples Center, Los Angeles.
«Pepsi is a brand at the forefront of pop culture and this partnership with Katy's film will deliver fans an exclusive one-of-a-kind experience at one of the biggest movie events of the Summer, starring one of the one today's hottest musical artists. This is one major way Pepsi will invite and inspire our fans to Live for Now.«

On March 7, 2012, Perry announced via Twitter that she and Paramount Pictures will release a part-biopic, part-concert film entitled Katy Perry: Part of Me in summer of 2012. She tweeted: «FINALLY, my MOVIE is coming out with Paramount this summer! It's called «KATY PERRY: PART OF ME» Presented In 3D!". Perry told MTV News that the film was the closing to the Teenage Dream era and explained what to expect, stating, «It's closing the chapter on Teenage Dream, but it's giving you such an inside perspective This film, you're going to see it from my best friend/buddy perspective, you're going to see exactly what I mean and feel and think about everything."