Katy Perry has called upon her fans to pick the poster she should use to publicise her upcoming film 'Part Of Me' on Twitter.

The singer is branching out into cinema next month with the release of the 3D film, which is set to document her recent life.

Perry took to Twitter to ask which poster she should use to promote the flick on Twitter, which fans asked to post a hashtag corresponding to their favoured poster.

As previously reported, Perry has uploaded a teaser clip for the video of her single 'Wide Awake', which was written for the 'Part Of Me' film.