"So happy to share with you the official #KP3D movie poster ... from a hairbrush to a headliner," she tweeted.
"Get ready, JULY 5TH!"
That "love who you are" message is represented on the poster itself, which features Perry in her PJs singing into a hairbrush in her bedroom. In the mirror next to her, she's dolled up in a sparkling red costume and bright blue hair, singing into a candy-cane microphone.
"Be yourself and you can be anything," the poster reads.
The big reveal came with a bit of a contest. The first 20 people who were able to put the full poster together out of the puzzle pieces she'd released and tweet a photo to @KatyPerry using #KP3D will be picked to have a chance to see their Twitter handles featured in the closing credits of the colorful 3-D flick.
The July 5 release was directed by Magical Elves' Dan Cutforth and Jane Lipsitz, who also served as producers on Justin Bieber's successful "Never Say Never" concert movie. In a trailer released in early April, fans got a taste of what they would see and hear in the flick, including Perry's candid confessions about her religious childhood and her split from Russell Brand.
MTV News spoke to Perry in March about the film, and she explained just what fans will see in it.
"It's closing the chapter on [my album] Teenage Dream, but it's giving you such an inside perspective," Perry said. "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."
The movie was filmed during her California Dreams trek. "That tour was so life-changing to me. I learned so much, I went through so much along the way," Perry said. "I'm not necessarily trying to prove anything to anyone, but not only will people really hands-down know me after they see this film, but you'll see me as the Dorothy wearing the red ruby slipper and at the end of it all I'm the [Wizard of] Oz as well."