See how the singer has transformed her hair and makeup over the years.
1998
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As a student at Burleson High School in Texas, Clarkson sported a wash-and-wear bob.
2002
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The American Idol winner began the small-screen competition with "flat hair and no makeup" but soon upped her game to include high-contrast blond streaks and coral gloss.
2003
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She released her debut album, Thankful, and wore her two-tone crop in tousled curls.
2004
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The Breakaway songstress lightened up her auburn mane with subtle golden highlights.
2004
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A sultry, smoky eye and an updo for the American Music Awards.
2005
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Clarkson looked ultra-glam at the MTV Video Music Awards with a sleek blond chignon.
2006
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A fun retro look for the Brit Awards! The singer matched her very '60s headband to her winged shadow.
2006
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She turned heads with an angled cut in a new shade. "Yeah, I rocked the blond," she told InStyle. "It makes you stand out more."
2007
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Clarkson released My December and went brunet.
2007
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She held with her walnut hue and added extensions.
2009
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For the American Music Awards, the All I Ever Wanted singer worked wavy red strands.
2011
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She attended a Phoenix event with dark smoky shadow and shimmery peach lips.
2012
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The Duets star showed off newly lightened locks.
2013
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The singer donned blond locks for the 55th Annual Grammy Awards in Los Angeles.
2013
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The singer opts for a bold red lip and wavy hairstyle.
2014
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Clarkson debuts an icy blonde hue.
2015
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The songstress is the epitome of a rock star with her newly shaved head.
2016
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The American Idol winner showed off her ombré locks in a half-up style, complementing the 'do with a pale pink lip and subtle eye makeup.