From long to short, blond to brunette, these stars made memorable changes.
Jim Carrey
Nicole Polizzi
Brad Pitt
Kristen Stewart
Miley Cyrus
Hayden Panettiere
Rihanna
Michelle Williams
Pink
Nicolas Cage
Katherine Heigl
Aaron Eckhart
Mischa Barton
Jon Hamm
Kate Gosselin
Nicole Richie
Salma Hayek
Hayden Panettiere
Victoria Beckham
Pete Wentz
Anne Heche
Jessica Alba
Jenna Jameson
Kate Gosselin
Drew Barrymore
Kim Kardashian
Diablo Cody
Rumer Willis
Lindsay Lohan
Kristen Stewart
Katherine Heigl
Angelina Jolie
Brad Pitt
Evan Rachel
Scarlett Johansson
Rachel McAdams
Nelly Furtado
Sarah Jessica Parker
Demi Moore
Lindsay Lohan
Natalie Portman
Britney Spears
Drew Barrymore
Katie Holmes
Ashlee Simpson
Jessica Simpson
Victoria Beckham
Angelina Jolie
Cameron Diaz
Julia Roberts
Charlize Theron
Madonna
Mandy Moore
Christina Aguilera
Jessica Alba
Nicky Hilton
Hilary Swank
Halle Berry
Nicole Polizzi
Brad Pitt
Kristen Stewart
Miley Cyrus
Hayden Panettiere
Rihanna
Michelle Williams
Pink
Nicolas Cage
Katherine Heigl
Aaron Eckhart
Mischa Barton
Jon Hamm
Kate Gosselin
Nicole Richie
Salma Hayek
Hayden Panettiere
Victoria Beckham
Pete Wentz
Anne Heche
Jessica Alba
Jenna Jameson
Kate Gosselin
Drew Barrymore
Kim Kardashian
Diablo Cody
Rumer Willis
Lindsay Lohan
Kristen Stewart
Katherine Heigl
Angelina Jolie
Brad Pitt
Evan Rachel
Scarlett Johansson
Rachel McAdams
Nelly Furtado
Sarah Jessica Parker
Demi Moore
Lindsay Lohan
Natalie Portman
Britney Spears
Drew Barrymore
Katie Holmes
Ashlee Simpson
Jessica Simpson
Victoria Beckham
Angelina Jolie
Cameron Diaz
Julia Roberts
Charlize Theron
Madonna
Mandy Moore
Christina Aguilera
Jessica Alba
Nicky Hilton
Hilary Swank
Halle Berry