Happy Birthday, Katy Perry: Take a Look Back at Her Most Memorable Style Moments

Honoring the pop star's show-stopping style on her 31st birthday.

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From the moment she arrived on the pop scene announcing she'd Kissed A Girl, Katy Perry has been a fashion influencer. Her close friendship with designer Jeremy Scott has produced some of her most memorable outfits, but high glamour brands like Gucci, Armani and Valentino have all played a part in developing her iconic style. On her 31st birthday, we're taking a look back at her best ensembles to date.

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Before she was a high fashion darling, she made her mark in playful, vintage inspired outfits like this ensemble from the 2008 MTV Video Music Awards.

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Barack Obama was elected President of the United States just two days before Katy Perry wore this Jean Charles de Castelbajac dress at the 2008 MTV Europe Music Awards.

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She made her contribution to the history of the naked dress in this Zuhair Murad mini at the 2010 MTV Movie Awards.

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Only Katy Perry could get away with putting angel wings on a Giorgio Armani dress as she did at the 53rd Annual Grammy Awards.

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She channeled her icon Elizabeth Taylor in this 60s-inspired Gucci gown at the 55th Annual Grammy Awards.

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In 2013, the Met Gala was titled PUNK: Chaos to Couture. Katy Perry's interpretation was this Dolce & Gabbana dress from the the duo's Fall 2013 collection.

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This unforgettable Moschino collection was a perfect fit for Katy Perry's famous affection for fun fashion.

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Katy Perry took this musical Valentino gown straight from the s/s 2014 couture catwalk to the 56th Annual Grammy Awards.

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When the singer was chosen to play the halftime show at the 49th Annual Superbowl, she selected Jeremy Scott to design all of her costumes, including this football dress.

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Katy went custom couture in a graffiti-splattered Jeremy Scott gown at this year's China Through the Looking Glass-themed Met Gala.

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Taking cues from Tiger Lily in a tassel-adorned maxi dress, the singer stunned as she checked out the Peter Pan play, Finding Neverland, on Broadway in NYC.

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With her favorite fashion designer, Jeremy Scott, by her side, Katy wowed in all-black as she had her hands imprinted at the TCL Chinese Theatre in Hollywood the same night Jeremy Scott: The People's Designer premiered.

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Perry goes for full-on glamour in Saint Laurent at the BAZAAR Icons party toasting Carine Roitfeld and Jean-Paul Goude's September 2015 issue portfolio.

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Katy, vocal lover of cats, put her passion on display in a feline-inspired number for a stop on her Prismatic World Tour in Puerto Rico.

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Showing off her patriotism, Katy performed at a Hillary Clinton rally in Iowa dressed in a figure-hugging white gown and American flag cape.

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