Tue, 26 Jun 2012 12:45:04 GMT | By Chloe Goody
Katy Perry surprises fans at secret screenings!

Katy Perry in the documentary Part of Me

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The revealing 3-D documentary shows behind-the-scenes footage of Katy Perry's world tour, her life off-stage and everything in between. In an interview with the chat-show host Ellen DeGeneres, Katy commented 'I think it's important to start breaking down the idea that to achieve your dream you always have to be perfect or flawless or live in some kind of fantasy world. So that's why I decided to put everything into the film.'

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