Katy Perry arrives for the premiere of "Katy Perry: Part Of Me"

Katy Perry arrives for the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Katy Perry arrives for the premiere of "Katy Perry: Part Of Me"

Katy Perry arrives for the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Katy Perry

Singer Katy Perry arrives for the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Katy Perry arrives for the premiere of "Katy Perry: Part Of Me"

Katy Perry arrives for the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Katy Perry arrives for the premiere of "Katy Perry: Part Of Me"

Katy Perry arrives for the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Katy Perry arrives for the premiere of "Katy Perry: Part Of Me"

Mary Perry Hudson (L), singer/producer Katy Perry and an unidentified guest pose together at the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Katy Perry arrives for the premiere of "Katy Perry: Part Of Me"

Katy Perry holds her handbag shapes like a slice of cake at the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Katy Perry

Singer Katy Perry arrives for the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Katy Perry arrives for the premiere of "Katy Perry: Part Of Me"

Katy Perry (R) poses with Shannon Woodward at the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Katy Perry arrives for the premiere of "Katy Perry: Part Of Me"

Katy Perry holds her handbag shapes like a slice of cake at the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Katy Perry arrives for the premiere of "Katy Perry: Part Of Me"

Katy Perry performs on Hollywood Blvd before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Katy Perry arrives for the premiere of "Katy Perry: Part Of Me"

Katy Perry performs on Hollywood Blvd before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

ROBYN BECK/AFP/Getty Images

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Katy Perry performs on Hollywood Blvd before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

Singer Katy Perry performs on Hollywood Blvd.

Katy Perry performs on Hollywood Blvd before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)