See how the singer has transformed her hair and makeup over the years.
1998
As a student at Burleson High School in Texas, Clarkson sported a wash-and-wear bob.
2002
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
She released her debut album, Thankful, and wore her two-tone crop in tousled curls.
2004
The Breakaway songstress lightened up her auburn mane with subtle golden highlights.
2004
A sultry, smoky eye and an updo for the American Music Awards.
2005
Clarkson looked ultra-glam at the MTV Video Music Awards with a sleek blond chignon.
2006
A fun retro look for the Brit Awards! The singer matched her very '60s headband to her winged shadow.
2006
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
Clarkson released My December and went brunet.
2007
She held with her walnut hue and added extensions.
2009
For the American Music Awards, the All I Ever Wanted singer worked wavy red strands.
2011
She attended a Phoenix event with dark smoky shadow and shimmery peach lips.
2012
The Duets star showed off newly lightened locks.
2013
The singer donned blond locks for the 55th Annual Grammy Awards in Los Angeles.
2013
The singer opts for a bold red lip and wavy hairstyle.
2014
Clarkson debuts an icy blonde hue.
2015
The songstress is the epitome of a rock star with her newly shaved head.
2016
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.