Katy Perry's new 3D documentary Katy Perry: Part of Me is sure to be THE big movie event of the summer. And Hollywire is among the first to bring you the brand-new full trailer! Check it out:

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The movie is being described as "a first-ever big-screen look at the internationalsuperstar’s life both on- and off-stage." And as you can see from the trailer, it's going to be covering everything -- yes, even her short-lived marriage to Russell Brand!

Katy said at this weekend's Kids' Choice Awards that the movie would be released in July, but she didn't get any more specific than that. Well, we finally we have an exact release date: it will be coming to a theater near you on July 5, 2012! That's just three short months away!

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Katy released the following statement: "I am so excited to paint the silverscreen in 3D color with help from our friends at Paramount and Imagine. For thelast year and a half, I have intimately documented my life both on and off thestage of The California Dreams Tour. I want to take you behind the cotton candyclouds and reveal the highs and lows and nuts of bolts of this extraordinaryride. I promise you, after seeing this film, you will truly knowme."

And the President of Paramount Film Group, Adam Goodman, said,“Katy’s one-of-a-kind story, and our unique ability at Insurge to createequally unique movie going experiences, was a natural fit. We’re beyond excitedto offer her fans, who inspired this movie, and moviegoers everywhere, thisonce-in-a-lifetime look into her world and capture a moment in time.” The movie is being directed  by JaneLipsitz and Dan Cutforth -- the same team who brought us Justin Bieber: Never Say Never!

But here's the most exciting part: Katy's giving a few lucky fans the chance to be in the movie! Amazing, right?! There are three ways to enter:

1. Submit a video of you singing along to "Firework"

2. Submit a video of how Katy inspires you

3. Upload a photo of you from one of Katy’s concerts

Submit your entries HERE. And good luck!

Will you be going to see Katy Perry: Part of Me when it comes to theaters on July 5?

Video courtesy of Katy Perry / Paramount