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Katy Perry rides the Trolley while introducing her new perfume "Meow" on "Extra" at The Grove in Los Angeles. Katy performed before spending over 3 hours signing autographs for fans.

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Elaborately dressed as a butterfly, Katy Perry perfoms at the 2012 MuchMusic Video Awards at MuchMusic HQ.

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Singer Katy Perry wears a patriotic dress as she performs at a Pepsi-sponsored event at Brooklyn Pier 9A, kicking off Fleet Week in New York.

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Katy Perry snapping some pics at 'Jimmy Kimmel Live'.

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Katy Perry arrives at Katy Perry: Part of Me Los Angeles Premiere held at The Grauman's Chinese Theatre in Hollywood, California.

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Katy Perry performs on Hollywood Blvd before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood.

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Katy Perry, Justin Bieber, Robert Pattinson and Serena Gomez arrive at the new night club "Bootsy Bellows" in West Hollywood , CA.

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Katy Perry poses with fans in Sydney.

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Another shot of Katy Perry on the trolley

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Katy Perry (center) films a digital short for "Saturday Night Live" with Matt Damon (right) and Andy Samberg (left) in the West Village in December.

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Katy Perry and Russell Brand attend the 3rd Annual "Change Begins Within" Benefit Celebration at the Los Angeles Times Central Court.

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Katy Perry on the Grammy nominations concert in LA

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Katy Perry strikes a pose on the red carpet as she arrives at the 2011 American Music Awards, held at the Nokia Theatre L.A. LIVE.

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Katy Perry and Russell Brand pose as they arrive at the 2011 MTV Video Music Awards.

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Katy Perry and husband Russell Brand departing from the Jaipur International Airport. The two tied the knot on Saturday Oct. 23.

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Katy Perry and Russell Brand arrive at the annual Pre-GRAMMY Gala presented by The Recording Academy and Clive Davis at The Beverly Hilton Hotel in Beverly, Hills, Calif. Brand and Perry were married Saturday Oct. 23 in a traditional Hindu wedding ceremony at a luxury resort in a tiger reserve in northwestern India.

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Russell Brand and Katy Perry out and about after brunch at Fred 62 in Los Feliz.

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Katy Perry well known for her catchy tunes as for her crazy outfits pose for a portrait in San Diego, CA.

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Katy Perry well known for her catchy tunes as for her crazy outfits.

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Katy Perry during the T in The Park music Festival in Balado, Scotland.

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Katy Perry performs during a concert held at Arena Wien in Vienna, Austria.

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Katy Perry arrives in a Dirnl, a traditional Bavarian dress, during the German game show "Wetten Dass" (Bet it...?) in Munich.

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Katy Perry arriving at the 2010 MTV Video Music Awards in Los Angeles.

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Katy Perry's too-hot-for-TV duet with Elmo was yanked from "Sesame Street's" season premiere after the boob-bouncing romp -- which exploded on YouTube -- triggered an avalanche of rants from offended viewers.

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Katy Perry goes to a concert in Warsaw, Poland.

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Katy Perry poses with characters from the FOX network series "The Simpsons" in this undated publicity photograph released by Fox.

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Stunner Katy Perry speaks onstage at the 2010 Teen Choice Awards in some hot-to-trot purple zebra-print pants.

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Katy Perry not only hosted the 2010 Teen Choice Awards, the sexy singer also played a cheerleader role during her performance.

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Sweet-faced songstress Katy Perry plays dress-up during her performance at the 2010 Teen Choice Awards where she donned some cheerleader garb alongside a football jersey-sporting Coy Monteith.

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Sexy singer Katy Perry sported this sparkly tube dress at the 2010 Teen Choice Awards, where Perry was the host.

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Katy Perry showed off her sexy body in this ruffly two-piece at Singfest 2010, where the singer held a media conference by the pool.

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Katy Perry sports some fun makeup and shows off her curvy frame while holding a media conference at Singfest 2010 in Singapore.

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Toothy beauty Katy Perry poses at the MTV World Stage Live red carpet in Kuala Lampur.

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Katy Perry shows off her killer curves in this green mini-dress for a potrait in New York City.

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Katy Perry shows off her backside in a familiar bathing suit while on vacation in the Bahamas with pals.

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Katy Perry shows off her ample curves in a bikini while smoking a cigarette with pals in the Bahamas.

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Katy Perry excitedly performs onstage at the Atlantis in the Bahamas in this green mini-dress.

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Pretty popstar Katy Perry is all smiles as she arrives at LAX airport.

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Sweetheart songbird Katy Perry shows off her pearly whites while posing for photos after dinner with a friend in Pairs, France.

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Katy Perry sports a sexy look while leaving her hotel in Paris, France.

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Curvy crooner Katy Perry sports a bust-baring dress while entering her hotel in Paris, France.

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Sweet singer Katy Perry shows off her best assets while posing for photos with fans in Paris, France.

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Katy Perry excitedly meets fans outside of the Skyrock radio station in Paris, France.

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Curvy cutie Katy Perry sports a maxi-dress with a Starry Night design on it while leaving Skyrock radio station in Paris, France.

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Katy Perry shows off her killer figure on the steamy August 2010 cover of British Esquire magazine.

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Christian cutie Katy Perry happily poses with fans in London, England.

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Stunner Katy Perry sports bright lips as she strolls with fiance Russell Brand in his native London.

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Katy Perry smiles wide in this beige romper while singing autographs for fans in London.

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Bubbly beauty Katy Perry poses happily on the streets in her fiance's native London.

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Lovable lovely Katy Perry sports camoflauge pants and a top hat while leaving BBC Radio 1 in London.

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Katy Perry sports a skin-tight pink dress while performing for a Live at Much special in Toronto, Canada.

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Katy Perry poses post-performance at a special Live@Much event in Toronto, Canada.

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Curvy cutie Katy Perry sports a tube dress while out in Toronto.

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A happy Katy Perry shows off her rear while performing at the 2010 MuchMusic Video Awards in Toronto, Canada.

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Katy Perry shows off her sexy curves in this fun outfit at the 2010 MuchMusic Awards.

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Katy Perry wears practically nothing on the red carpet of the 2010 MuchMusic Video Awards in this blue tie-side dress.

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Katy Perry shows off her figure in this revealing blue number on the MuchMusic Video Awards red carpet.

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Before the awards, crooning cutie Katy Perry rehearsed for the MuchMusic Video Awards in Toronto.

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Sweetheart songbird Katy Perry hosts the "Teenage Dream" Album Playback Party in Toronto, Canada, where cotton candy was on the menu.

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Sexy singer Katy Perry sports a pontyail and this one-shoulder fringe dress with eTalk's Ben Mulroney in Toronto, Canada.

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California Girl Katy Perry wears this LA-themed leather dress while performing in New York City.

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Colorful cutie Katy Perry shows off her curves in this fun Cali-themed dress at a Volkswagen Jetta event in New York City.

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Sexy sweetheart Katy Perry shows off her smile in front of a Volkswagen Jetta at an event for the company in New York City.

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Bold babe Katy Perry wore this figure-flaunting number while strolling around New York City.

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Katy Perry showed off her to-die-for figure in this sexy half-American, half-British flag dress she wore during the 2010 FIFA World Cup, where the singer claimed whe was supporting both her own country's team and her fiance Russell Brand's native England.

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Adorable popstar Katy Perry showed off her fun frames while arriving at Heathrow airport.

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Sweet singer Katy Perry showed off her curvy frame in this peach dress while arriving at NRJ radio station in Paris.

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Katy Perry showed off her best assets backstage at the MTV Movie Awards in Universal City, CA.

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Curvy songstress Katy Perry showed off her killer body while in the photo room at the 2010 MTV Movie Awards.

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Smiley stunner Katy Perry still looks sexy in this blue wig at the 2010 MTV Movie Awards.

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Curvy cutie Katy Perry spor a barely-there sparkly mini-dress and a blue wig on the red carpet at the 2010 MTV Movie Awards.

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Singing beauty Katy Perry leaves a birthday dinner for fiance Russell Brand sporting an adorable birthday hat.

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Curvy songstress Katy Perry shows off her figure in this gold two-piece number at a playback party for her new album, "Teenage Dream".

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Katy Perry happily poses with fiance Russell Brand at the premiere of his film, "Get Him to the Greek" in Los Angeles, CA.

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Smiley songstress Katy Perry poses for photos at her fiance Russell Brand's latest comedy, "Get Him to the Greek".

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Katy Perry shows off her curves in this leg-bearing dress alongside fiance, "Get Him to the Greek" star Russell Brand, at the film's premiere in Los Angeles.

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Katy Perry looks lost at the premiere of "Get Him to the Greek" alongside her fiance, the film's star Russell Brand.

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Bold babe Katy Perry sports some fun hair and short-shorts while shopping on Melose Avenue.

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Brunette babe Katy Perry sports some big pink hoops and a blue zipper dress while at the P.S. Arts presents "The Bag Lunch" event in Los Angeles.

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Katy Perry leaves an office building in New York City minus her usual curves.

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Sweetheart singer Katy Perry shows some leg in this sexy number at the Costume Insitute Benefit Gala at the Metropolitan Museum of Art in New York City.

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Katy Perry poses with pal Zoe Saldana at the "Unofficial After Party" for teh Metropolitan Museum of Art's 2010 Costume Institute Benefit Gala.

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Katy Perry shows off her baby blues at the 27th Annual ASCAP Pop Music Awards in Los Angeles.

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Katy Perry goes shopping, hits up the gym, and shows her "Jersey Shore" love in this "GTL" t-shirt out and about in Los Angeles.

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Curvy popstar Katy Perry shows off some cute bangs at the 23rd Annual Nickelodeon Kids' Choice Awards

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Tantalizing pop princess Katy Perry shows off her killer curves in this sequined mini-dress at the Nickelodeon's Kids' Choice Awards in Los Angeles.

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Brunette superbabe Katy Perry rocks some curly locks and a sexy red number at Perez Hilton's birthday party in Los Angeles, CA.

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Sexy songstress Katy Perry shows off her ample assets at pal Perez Hilton's birthday party in Los Angeles, CA.

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Pretty pop star Katy Perry leaves a West Hollywood gym after working on her fitness.

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Katy Perry shows off her rear-end in this backless gown at the 52nd Annual Grammy Awards in Los Angeles, CA.

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When she's not on the red carpet, Katy Perry is working on her fitness, as she proved while leaving a West Hollywood gym in a shirt reading, "Girls Just Wanna Have Fun".

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Glamour Magazine covergirl Katy Perry looks gorgeous in blue on the mag's front page.

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Katy Perry sports a tummy-bearing sleeveless tank after a workout and shopping trip in Los Angeles, CA.

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Goofy babe Katy Perry shows off her curves in this low-cut dress while announcing the nominees for best rock album during the Grammy Nominations Concert Live in Los Angeles.

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Curvy sweetheart Katy Perry showed off her childish side in this Sesame Street-themed dress at the Jean-Charles de Castelbajac fashion show during 2009 Fashion Week in Paris, France.

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Katy Perry poses for the cameras in this spiky, curve-hugging mini-dress at the 2009 MTV Video Music Awards in New York City.

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Katy Perry shows off her bikini body in this pink ruffly two-piece at the Fontainebleau Hotel in Miami, FL.

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Katy Perry sports this bold look at the BBC Radio 1 studios in London, England in 2009.

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Katy Perry sports this little blue bow dress and red heels at the Glamour Magazine Women of the Year awards in London, England.

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Adorable popstar Katy Perry sports this blue gown to the 2009 Metropolitan Museum of Art's Costume Instite Gala in New York City.

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Katy Perry wore this crazy creation when she hosted the 2008 MTV Europe Music Awards in Liverpool, England.

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Adorable singing sensation Katy Perry wears football gear during the 2008 MTV Europe Music Awards.

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A tan Katy Perry shows off her sexy physique at the 2008 MTV Video Music Awards in Los Angeles, CA.

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Katy Perry gets a smooch from former boyfriend Travis McCoy who she bashes on her most recent album, "Teenage Dream".

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Katy Perry sports purple jeans while leaving an appearance on the Howard Stern Show in New York City.

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Katy Perry looks a far cry from the sexy popstar she is today at the 2008 Spike TV's Guy's Choice Awards.