Pop's sweetheart Katy Perry has unveiled the official trailer for her upcoming 3D concert movie.

The 'California Gurls' sensation, who last night (April 1) picked up a Kids' Choice Award for her role in the film 'The Smurfs', is set to release this exciting new project in the summer and has now released a teaser clip of the movie.

In the short promotional trailer, Perry can be heard admitting:

"The atmosphere I grew up in was 100% Christian. I started singing in church and I never really had another plan."

It also showcases footage from her recent world tour, studio time and backstage antics.

Watch the trailer below: