Style Evolution: Katy Perry(01 of29)
Open Image Modal2008Singer Katy performs on NBC's Today' Show (credit:PA)
Style Evolution: Katy Perry(02 of29)
Open Image Modal2004Katy at the Teen People 2004 Artists of the Year Party (credit:PA)
Style Evolution: Katy Perry(03 of29)
Open Image Modal2006Katy Perry arrives to the Red is for Emmy party for Invisible Children (credit:PA)
Style Evolution: Katy Perry(04 of29)
Open Image Modal2008Katy Perry at the MTV Video Music Awards (credit:PA)
Style Evolution: Katy Perry(05 of29)
Open Image Modal2008Katy attending the Christian Dior Spring Summer 2009 Ready-to-Wear collection show (credit:PA)
Style Evolution: Katy Perry(06 of29)
Open Image Modal2008Katy arriving at the MTV 2008 European Music Awards (credit:PA)
Style Evolution: Katy Perry(07 of29)
Open Image Modal2009Katy arriving at VH1's 14th Annual Critics' Choice Awards (credit:PA)
Style Evolution: Katy Perry(08 of29)
Open Image Modal2009Katy attends the T-Mobile myFaves Shot of a Lifetime Party (credit:PA)
Style Evolution: Katy Perry(09 of29)
Open Image Modal2009Katy arriving at the Brit Awards 2009 (credit:PA)
Style Evolution: Katy Perry(10 of29)
Open Image Modal2009Katy Perry wearing a pair of pink sunglasses and flowery blazer on a rainy day in London (credit:PA)
Style Evolution: Katy Perry(11 of29)
Open Image Modal2009Katy attending the Jean Charles de Castelbajac's Spring-Summer 2010 ready-to-wear collection show (credit:PA)
Style Evolution: Katy Perry(12 of29)
Open Image Modal2009Katy arriving for the 2009 MTV Europe Music Awards (credit:PA)
Style Evolution: Katy Perry(13 of29)
Open Image Modal2010Katy Perry at the 52nd Annual Grammy Awards (credit:PA)
Style Evolution: Katy Perry(14 of29)
Open Image Modal2010Katy Perry arrives at Nickelodeon's 23rd Annual Kids' Choice Awards (credit:PA)
Style Evolution: Katy Perry(15 of29)
Open Image Modal2010Katy arriving at the 2010 Metropolitan Museum of Art Costume Institute Benefit (credit:PA)
Style Evolution: Katy Perry(16 of29)
Open Image Modal2010Katy, and Russel Brand at the premiere of the film Get him to the greek (credit:PA)
Style Evolution: Katy Perry(17 of29)
Open Image Modal2010Katy during the MTV Movie Awards (credit:PA)
Style Evolution: Katy Perry(18 of29)
Open Image Modal2010Katy arrives for the MTV European Music Awards (credit:PA)
Style Evolution: Katy Perry(19 of29)
Open Image Modal2010Katy attends Z100's Jingle Ball (credit:PA)
Style Evolution: Katy Perry(20 of29)
Open Image Modal2011Katy attending The Smurfs World Premiere (credit:PA)
Style Evolution: Katy Perry(21 of29)
Open Image Modal2011Katy Perry arriving at the 2011 MTV Video Music Awards (credit:PA)
Style Evolution: Katy Perry(22 of29)
Open Image Modal2011Singer Katy arrives on the red carpet at the MTV European Music Awards (credit:PA)
Style Evolution: Katy Perry(23 of29)
Open Image Modal2012Katy attends the DirecTV Super Bowl Party (credit:PA)
Style Evolution: Katy Perry(24 of29)
Open Image Modal2012Katy during the 2012 MusiCares Person Of The Year Tribute To Paul McCartney (credit:PA)
Style Evolution: Katy Perry(25 of29)
Open Image Modal2012Katy arrives at the 54th annual Grammy Awards (credit:PA)
Style Evolution: Katy Perry(26 of29)
Open Image Modal2012Katy arrives at Nickelodeon's 25th Annual Kids' Choice Awards (credit:PA)
Style Evolution: Katy Perry(27 of29)
Open Image Modal2012Katy during the 2012 Billboard Awards (credit:PA)
Style Evolution: Katy Perry(28 of29)
Open Image Modal2012Katy during filming of the Graham Norton show (credit:PA)
Style Evolution: Katy Perry(29 of29)
Open Image Modal2012Katy arriving at The City of Hope's Spirit of Life Awards (credit:PA)