Katy Perry: Marriage to Russell Brand was full of ‘compromise and sacrifice’

In Katy Perry's new concert movie, "Part of Me," she's revealing a lot more of herself than just blue wigs, whipped-cream-spraying bras, and giant lollipop props. During her 11-month California Dreams world tour, the pop star was also trying to keep her new marriage to now-ex-husband Russell Brand alive — and all the heartbreak was caught by the cameras. "Being in love is a dream, but the reality is not like the movies," says Perry, 27, in the film which hits theaters on July 5. "There's a lot more compromise and sacrifice."

And for the "Wide Awake" singer, it seemed most of that fell on her. After her October 2010 wedding, she told her management that the longest she would go without seeing Brand, 38, would be two weeks and that her schedule had to allow days here and there for her to fly out to see him wherever he was in the world. In the movie, there is a scene where Perry learns she has to work 18 days in a row. "Where are my relationship days?" she asks in frustration. During another scene, Perry looks into the camera while sitting on an airplane on her way to see Brand and says, "I'm trying to keep my marriage alive."

But as much as she did to make it work, Brand eventually filed for divorce this past December 30 after just 14 months of marriage. "The truth is I'm a romantic and I believed in the fairy tale," Perry says in a scene that was filmed after the split. "I did everything I could, but it still failed. The dream of being in love is a lot different than the reality of making it work."

"Katy Perry: Part of Me" captures those vulnerable moments backstage where the singer was struggling with the pain of her personal life just moments before she was supposed to step onstage and entertain thousands of fans. "There were times when what was going on was so overwhelming that I had to bend over to let those tears fall straight out of my eyes and not my false lashes just as I'm about to go up on that ramp and sing 'Teenage Dream,'" she told The Hollywood Reporter. In an interview on "The Tonight Show With Jay Leno" on Thursday, Perry admitted, "'It wasn't always exciting to watch those unflattering scenes where I'm crying and having an intense moment, but I think that people will relate to the movie even more seeing me at my lowest point and now at my highest point."

More Celebrity Features on Yahoo!:

Check out "The Yo Show's" exclusive interview with Katy Perry!

Follow omg! on Twitter