21 Times Katy Perry Had the Most Colorful Coif in Hollywood

Ever since she appeared on the music scene with "I Kissed a Girl" in 2008, Katy Perry had us hooked with both her catchy tunes and her tendencies to rainbow-bright beauty. She doesn't just rock technicolor hues in music videos and for her stage performances — she makes these shades look totally natural every day via nail art, makeup, and (of course) her ever-changing hair. Katy's coif has been privy to practically every Pantone swatch possible now (she even looks good in green)! In honor of the star's 31st birthday, take a look back at some our favorite fabulous styles she's sported so far.

2010
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2010

Katy Perry donned a now-iconic royal-blue wig, complete with Bettie Page bangs, at the 2010 MTV Movie Awards.

2010
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2010

Later in 2010, Katy arrived at the MTV Video Music Awards with her raven hair highlighted with pink, purple, and blue streaks.

2011
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2011

For the 2011 Grammys, Katy ditched her rainbow hair for a rich black mane.

2011
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2011

Katy was in Canada celebrating the release of her first perfume, Purr, back in 2011 donning red curls that were accented with kitten ears.

2011
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2011

For the Smurfs premiere in 2011, Katy took a style cue from Smurfette and showed off blond locks with a darker hue on her ends.

2011
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2011

Dressed like a modern geisha at the 2011 MTV Video Music Awards, Katy opted for a shocking pink hair color that complemented her pastel ensemble.

2011
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2011

By the end of 2011, Katy lightened up her look with a sherbet-hued bob.

2012
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2012

Katy was back to her bold blue hair at the 2012 Kids' Choice Awards.

2012
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2012

For an industry dinner in 2012, Katy tried out a more vampy look complete with purple-colored waves.

2012
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2012

At a benefit later that same year, Katy went with silvery plum locks that she tucked into a faux bob for a vintage style.

2012
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2012

For the 2012 premiere of Katy Perry: Part of Me, the leading lady went for bombshell waves in a rich violet hue.

2013
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2013

At the Spring 2014 Chanel show, the singer traded in her rainbow locks for striking black hair that's the perfect complement to her pale complexion.

2013
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2013

At the 2013 Grammy Awards, Katy wore a glossy braided updo that was both sophisticated and a little funky — just like her.

2014
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2014

At MOCA's 35th Anniversary Gala, Katy's sleek lob with long bangs drew attention to her mod cat eye.

2013
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2013

Katy attended the 2013 NRJ Music Awards with a long, braided pony that complemented her detailed gown.

2014
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2014

Katy appeared at an event for Staples with a tousled green bob with black roots.

2014
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2014

At the 2014 MTV Video Music Awards, Katy was back to black with long wavy locks and brow-grazing bangs — as a nod to Britney Spears.

2014
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2014

Katy got into the Halloween spirit at Knott's Scary Farm by rocking two blood-red buns that contrasted with her midnight mane.