Rock & Republic and Conde Nast Fashion Rocks Pre-Party

NEW YORK - SEPTEMBER 05: Actress Katy Perry attends the Rock & Republic and Conde Nast Fashion Rocks Pre-Party during the Mercedes-Benz Fashion Week Spring 2008 on September 5, 2007 in New York City. (Photo by Scott Wintrow/Getty Images)

"The Smurfs" World Premiere - Arrivals

NEW YORK, NY - JULY 24: Katy Perry attends the premiere of "The Smurfs" at the Ziegfeld Theater on July 24, 2011 in New York City. (Photo by Andy Kropa/Getty Images)

"The Smurfs" World Premiere - Red Carpet

NEW YORK, NY - JULY 24: Katy Perry attends the premiere of "The Smurfs" at the Ziegfeld Theater on July 24, 2011 in New York City. (Photo by Jemal Countess/Getty Images)

"The Smurfs" World Premiere - Red Carpet

NEW YORK, NY - JULY 24: Katy Perry attends the premiere of "The Smurfs" at the Ziegfeld Theater on July 24, 2011 in New York City. (Photo by Jemal Countess/Getty Images)

2011 Logie Awards - Arrivals

MELBOURNE, AUSTRALIA - MAY 01: Singer Katy Perry arrives on the red carpet ahead of the 2011 Logie Awards at Crown Palladium on May 1, 2011 in Melbourne, Australia. (Photo by Ryan Pierse/Getty Images)

Katy Perry Fragrance Launch

MELBOURNE, AUSTRALIA - APRIL 30: Singer Katy Perry attends the launch of her new fragrance 'Purr' at Myer, Bourke Street on April 30, 2011 in Melbourne, Australia. (Photo by Graham Denholm/Getty Images)

Katy Perry Fragrance Launch

MELBOURNE, AUSTRALIA - APRIL 30: Singer Katy Perry greets fans at the launch of her new fragrance 'Purr' at Myer, Bourke Street on April 30, 2011 in Melbourne, Australia. (Photo by Graham Denholm/Getty Images)

Katy Perry Fragrance Launch

MELBOURNE, AUSTRALIA - APRIL 30: Singer Katy Perry (C) poses at the launch of her new fragrance 'Purr' at Myer, Bourke Street on April 30, 2011 in Melbourne, Australia. (Photo by Graham Denholm/Getty Images)

Arthur - European Premiere - Inside Arrivals

LONDON, ENGLAND - APRIL 19: (UK TABLOID NEWSPAPERS OUT) Russell Brand and Katy Perry attend the European premiere of Arthur at the Cineworld O2 on April 19, 2011 in London, England. (Photo by Dave Hogan/Getty Images)

Katy Perry Performs Live At HMV Hammersmith Apollo

LONDON, UNITED KINGDOM - MARCH 17: Katy Perry performs on the opening night of her 'California Dreams' UK tour at Hammersmith Apollo on March 17, 2011 in London, England. (Photo by Neil Lupin/Getty Images)

Singer Katy Perry performs onstage durin

Singer Katy Perry performs onstage during the GRAMMY Awards Show at the Staples Center in Los Angeles on February 13, 2011. Mick Jagger, Bob Dylan and Barbra Streisand joined rising stars and seasoned chart-toppers at the music industry's annual Grammys awards bash. Lady Gaga, Katy Perry and teen sensation Justin Bieber were also on a star-studded roster of performers at the show in Los Angeles, where rapper Eminem hopes to seal a comeback year with a brace of awards. The Grammys are the music industry's equivalent of the Oscars, the climax of Hollywood's annual awards season that this year takes place in barely two weeks' time, on February 27. AFP PHOTO / Mark RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)

Singer Katy Perry arrives with her husba

Singer Katy Perry arrives with her husband comedian Russell Brand for the 53rd annual Grammy Awards at the Staples Center in Los Angeles on February 13, 2011. AFP PHOTO / Robyn Beck (Photo credit should read ROBYN BECK/AFP/Getty Images)

Rihanna Backstage At KA by Cirque du Soleil

LAS VEGAS - SEPTEMBER 18: Singers Rihanna and Katy Perry (C) with cast members Cheri Haight (L) and Jennifer Haight (R) appear backstage after the singers attended "KA" by Cirque du Soleil at the MGM Grand Hotel/Casino September 18, 2010 in Las Vegas, Nevada. (Photo by David Becker/Getty Images for Cirque du Soleil)

52nd Annual GRAMMY Awards - Salute To Icons Honoring Doug Morris - Roaming

BEVERLY HILLS, CA - JANUARY 30: Actor/Comedian Russell Brand, Singer Katy Perry and Singer Rihanna during the 52nd Annual GRAMMY Awards - Salute To Icons Honoring Doug Morris held at The Beverly Hilton Hotel on January 30, 2010 in Beverly Hills, California. (Photo by Larry Busacca/Getty Images for NARAS)

52nd Annual GRAMMY Awards - Salute To Icons Honoring Doug Morris - Roaming

BEVERLY HILLS, CA - JANUARY 30: Comedian Russell Brand, singer Katy Perry and singer Rihanna during the 52nd Annual GRAMMY Awards - Salute To Icons Honoring Doug Morris held at The Beverly Hilton Hotel on January 30, 2010 in Beverly Hills, California. (Photo by Larry Busacca/Getty Images for NARAS)

52nd Annual GRAMMY Awards - Salute To Icons Honoring Doug Morris - Roaming

BEVERLY HILLS, CA - JANUARY 30: Comedian Russell Brand, singer Katy Perry and singer Rihanna during the 52nd Annual GRAMMY Awards - Salute To Icons Honoring Doug Morris held at The Beverly Hilton Hotel on January 30, 2010 in Beverly Hills, California. (Photo by Larry Busacca/Getty Images for NARAS)

MTV Europe Music Awards 2009 - VIP Arrivals

BERLIN - NOVEMBER 05: Singer and presenter Katy Perry arrives for the 2009 MTV Europe Music Awards held at the O2 Arena on November 5, 2009 in Berlin, Germany. (Photo by Dave Hogan/Getty Images)

Jean-Paul Gaultier - Paris Fashion Week Spring/Summer 2010

PARIS - OCTOBER 03: (L-R) Rihanna, Jean-Paul Gaultier and Katy Perry pose backstage during the Jean-Paul Gaultier Pret a Porter show during Paris Womenswear Fashion Week Spring/Summer 2010 on October 3, 2009 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)

51st Annual Grammy Awards - Backstage & Audience

LOS ANGELES, CA - FEBRUARY 08: Musicians Paul McCartney (L) and Katy Perry backstage at the 51st Annual Grammy Awards held at the Staples Center on February 8, 2009 in Los Angeles, California. (Photo by Larry Busacca/Getty Images)

51st Annual Grammy Awards - Show

LOS ANGELES, CA - FEBRUARY 08: Singer Katy Perry speaks during the 51st Annual Grammy Awards held at the Staples Center on February 8, 2009 in Los Angeles, California. (Photo by Larry Busacca/Getty Images)

51st Annual Grammy Awards - Red Carpet

LOS ANGELES, CA - FEBRUARY 08: Musician Katy Perry (L) and singer M.I.A. arrive at the 51st Annual Grammy Awards held at the Staples Center on February 8, 2009 in Los Angeles, California. (Photo by Larry Busacca/Getty Images)