Charlize Theron may be one of Hollywood's hottest actresses, but we find her utterly sexy for tossing the bronzer, mascara and hairspray for unglamorous roles in "Monster" and "North Country." But don't get us wrong: While we admire the South African-born beauty for her many big screen hair and makeup transformations, they've played out into many unforgettable beauty moments when the cameras aren't rolling.

From Grace Kelly curls and peachy cheeks to midnight black locks and glowing skin, Charlize is quite the chameleon. Now sporting a shaved head for her upcoming film "Mad Max: Fury Road," the new mom of an adopted son Jackson is a true example of the saying, "It's just hair."

In celebration of Theron's 37th birthday on Tuesday (August 7th), we're taking a look back at the actress' makeup and hairstyles over the years. Vote on all her looks in the slideshow below.

Meanwhile, get a glimpse of the dung beetle gown Charlize Theron wears in "Snow White and the Huntsman."

Flip through our many other Beauty Evolutions.

Want more? Be sure to check out Stylelist on Twitter, Facebook, Tumblr and Pinterest.

Loading Slideshow...
  • January 1992

    Getty Images

  • September 1996

    WireImage

  • October 1996

    Ron Galella Collection

  • August 1997

    Ron Galella Collection

  • October 1997

    Ron Galella Collection

  • September 1998

    Ron Galella Collection

  • July 1999

    WireImage

  • November 1999

    New York Daily News

  • January 2000

    Getty Images

  • January 2000

    Getty Images

  • March 2000

    Getty Images

  • June 2000

    Getty Images

  • October 2000

    Getty Images

  • October 2000

    Getty Images

  • February 2001

    Getty Images

  • September 2001

    AFP

  • March 2002

    Getty Images

  • October 20023

    Getty Images

  • August 2003

    Getty Images

  • August 2003

    Getty Images

  • September 2003

    Getty Images

  • November 2003

    Getty Images

  • January 2004

    Getty Images

  • January 2004

    Getty Images

  • February 2004

    Getty Images

  • February 2004

    Getty Images

  • February 2004

    Getty Images

  • March 2004

    Getty Images

  • April 2004

    Getty Images

  • May 2004

    AFP

  • January 2005

    Getty Images

  • February 2005

    Getty Images

  • February 2005

    Getty Images

  • September 2005

    Getty Images

  • September 2005

    Getty Images

  • October 2005

    Getty Images

  • November 2005

    Getty Images

  • December 2005

    Getty Images

  • January 2006

    FilmMagic

  • March 2006

    AFP

  • May 2006

    Getty Images

  • June 2006

    WireImage

  • February 2007

    Getty Images

  • September 2007

    Getty Images

  • September 2007

    Getty Images

  • December 2007

    Getty Images

  • January 2008

    Getty Images

  • March 2008

    Getty Images

  • August 2008

    Getty Images

  • September 2008

    Getty Images

  • March 2009

    Getty Images