The 'California Gurls' singer revealed that the film, named after her latest single 'Part Of Me', will hit cinemas in the summer.
"READY FOR HUGE NEWS?!" Perry tweeted on Wednesday (March 7). "FINALLY, my MOVIE is coming out with Paramount this summer! It's called "KATY PERRY: PART OF ME" Presented In 3D! KATYCATS-LETS TREND #KP3D."
The project was first rumoured back in February, with reports saying Paramount planned to base Perry's film on the same model used for Justin Bieber's Never Say Never.
It was claimed last week that the singer is "genuinely interested" in starring in a biopic of Britain's Got Talent winner Paul Potts.
Perry recently teased her future plans by stating that she already has "an idea" of what her next two albums will sound like.
Listen to Katy Perry's 'Part Of Me' below: