Katy Perry spells fun with her blue hair
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Katy Perry attends The 2012 MusiCares Person Of The Year Gala Honoring Paul McCartney at Los Angeles Convention Center on February 10, 2012 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
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Katy Perry keeps her style sleek ans simple as she arrives at Roc Nation's Hosts Annual Private Pre-GRAMMY Brunch at Soho House on February 11, 2012 in West Hollywood, California. (Photo by Jon Kopaloff/FilmMagic)
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Singer Katy Perry attends The 54th Annual GRAMMY Awards at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Lester Cohen/WireImage)
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Singer Katy Perry arrives at the 54th Annual GRAMMY Awards held at the Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Dan MacMedan/WireImage)
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Singer Katy Perry launches her exclusive False Lash Range by Eylure at The Americana at Brand on February 22, 2012 in Glendale, California. (Photo by Jason LaVeris/FilmMagic)
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Singer Katy Perry arrives at Audi Arrivals at 20th annual Elton John AIDS Foundation Academy Awards viewing party on February 26, 2012 in Beverly Hills, California. (Photo by Allen Berezovsky/WireImage)
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Katy Perry arrives for the Viktor & Rolf Ready-To-Wear Fall/Winter 2012 show as part of Paris Fashion Week at Espace Ephemere Tuileries on March 3, 2012 in Paris, France. (Photo by Alex Moss/FilmMagic)
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MARCH 05: Katy Perry attends the Yves Saint-Laurent Ready-To-Wear Fall/Winter 2012 show as part of Paris Fashion Week on March 5, 2012 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)
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MARCH 06: Katy Perry attends the Chanel Ready-To-Wear Fall/Winter 2012 show as part of Paris Fashion Week at Grand Palais on March 6, 2012 in Paris, France. (Photo by Tony Barson/WireImage)
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Singer Katy Perry arrives at Gare du Nord on March 19, 2012 in Paris, France. (Photo by Marc Piasecki/FilmMagic)
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Katy Perry arrives for the Echo Awards 2012 at Palais am Funkturm on March 22, 2012 in Berlin, Germany. (Photo by Luca Teuchmann/WireImage)
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Singer Katy Perry attends Nickelodeon's 25th Annual Kids' Choice Awards held at Galen Center on March 31, 2012 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)
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Singer Katy Perry attends Day 3 of the 2012 Coachella Valley Music & Arts Festival held at the Empire Polo Club on April 15, 2012 in Indio, California. (Photo by Frazer Harrison/Getty Images for Coachella)