It's been a whirlwind of a year for pop superstar Katy Perry. In 2011, she earned six #1 singles off her [article id="1687566"]Teenage Dream[/article] album, embarked on a [article id="1677556"]worldwide tour[/article] and endured a very public [article id="1676636"]breakup from Russell Brand[/article].

And now fans can share all these experiences and more as Perry is set to release her 3-D documentary, [article id="1687359"]"Part of Me,"[/article] on July 5th. The movie chronicles her unparalleled year as she has career highs, but suffers personal lows.

And it's those very personal moments, especially with Brand, that many will find most surprising. For the past six months, Perry has been mum on the issue of her divorce, and now for the first time, she is opening up about the split.

The film picks up just a few months after the two [article id="1650689"]tied the knot[/article], as Perry embarks on her biggest tour to date, the California Dreams Tour. Fans witness Perry put in hours of hard work preparing for the tour and traveling to hundreds of different cities. Yet, with the success that she was having onstage, it was offstage where things were falling apart.

It seems her new marriage and a grueling tour schedule were not mixing well, but it was not from lack of trying: Perry was adamant that while on her nearly yearlong tour, she take time out to see her husband, but in the end, it just couldn't save the marriage.

At one point, while flying to one of her tour stops, Perry admits to the camera, "I'm trying to keep my marriage alive."

"Part of Me" gives fans a rare glimpse inside a celebrity marriage, with Brand featured throughout the film. Some moments are touching, like when the comedian comes to wish her well on the opening night of her tour, yet some are heartbreaking to watch. In one scene, Perry is crying uncontrollably, delaying the start time of the concert, but like a true professional, she chokes back the tears and puts on a brave face for her fans.

Perry talks candidly about Brand in the film, revealing that it was her skyrocketing career that could have played into the downfall of her marriage. "I thought to myself, 'When I find that person that's going to be my life partner, I won't ever have to choose [between the partner and my career]. They won't be threatened or have weird motives.' Then I started to realize, that's not true," she admits.

Yet, when asked in the film whether she still misses Brand, Perry begins to cry and admits that she does, but says she did everything she could to make it work.

"I have that same belief system with everything, from career to my life to my personal life, everything. And I will do everything it takes to not fail," she shares. "And I did everything it took, but it still failed."

Perry recently told MTV News that even though the subject of [article id="1688266"]her divorce[/article] is difficult to deal with, she felt she would be doing her fans a disservice if she didn't include it in the film.

"The truth will always prevail," Perry said. "Everything has to be handled integrously and appropriately, and it's not nice to air all your dirty laundry, because that stinks, so I had to be very delicate with the situation, but I couldn't avoid the elephant in the room," she explained. "If you were to have seen that movie and walked out and [my breakup] wasn't at all mentioned, like it never happened, you'd be like, 'Eh, this is weird. What is she trying to hide?' I don't like to hide."

Check out everything we've got on "Katy Perry: Part of Me."

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