Granted I didn't watch Justin Bieber or Miley Cyrus' movies about being on tour, but I did watch Katy Perry's last night at the famous Chinese Grauman Theater in Hollywood. For the life of me I can not understand why Katy made this "documentary." She's said that she actually helped pay for some of it herself because she believes in it so much. Her career is on fire, but you don't see Beyonce, Lady Gaga, Adele and other chart toppers using a movie studio for their shameless self-promotion.
Part of Me is one and a half hours of footage that Katy approved of herself to show the world that she's just so great. Shockingly, for a young woman who celebrates her "weirdness" and gravitates towards being a quirky jokester, the film is virtually void of all humor.

Katy's work ethic is impressive to say the least. It's common for artists to cancel meet and greets, but Katy refuses to, no matter how exhausted she is. She also takes the time out to make each of her fans feel important instead of just a number in line. There wasn't much meet and greet footage shown in the film, but I do believe that she delivers every single time she meets her Katy Cats.
The film actually begins with an entire full-song performance of John Travolta and Olivia Newton-John singing in Grease. I sh!t you not! Moving on, a good one-fifth of the film shows Katy without her wearing any makeup. Unlike the picture Russell Brand posted, she doesn't look bad at all!
Katy shows footage of herself when she was a little girl, has people giving interviews about how she struggled to make it in the music industry and explains that she's embarking on a one-year tour, all the while Katy insists on having three to four days off every two weeks to fly wherever Russell is to see him. "I'm trying to keep my marriage alive," she says at one point. It was pretty heartbreaking to see footage of Katy bawling her eyes out backstage when she and Rusty split. Backstage she's seen bending over, crying and hyperventilating before putting a smile on, greeting the largest crowd of her entire tour, and belting out "Teenage Dream" before later breaking down in tears during her performance that night.
Katy does not explain why she and Rusty broke up in the movie, but the film makes it look as though she was the only one trying to keep the "marriage alive." Katy was always the one flying to see him, even when her manager reminds her that Russell was supposed to fly in to see her. She definitely makes Russell look like a jerk all the while making herself look like a saint.
I would have loved to have seen Katy feature some of her bad moments to counter all her perfect cheerfulness with some b!tchy rage, to explain why her fashion is so eccentric, why she obviously has trust issues (she works with everyone she met before she was famous) and why it seems like her only friends are the ones on her payroll, just saying. There's so much more to Katy, so Part of Me is definitely part of her.
I would have even enjoyed seeing footage of her speaking about where she finds her inspiration for her songs, how she chooses them, and her struggles to create her songs to begin with. Instead, Katy's 3D movie is less of a documentary and more of an overpriced Behind the Music or E! True Hollywood Story special. A good portion of the movie features Katy singing different songs on stage. For her fans who have seen her in concert, they're literally walking away with nothing extra.