What's Her Best Hair?

01 of 25

ASHLEY TISDALE

For the London premiere of High School Musical 3, the star showed off long honey-blonde locks – but she darkened her hair to chocolate brown for the film’s L.A. debut a week later.

02 of 25

VICTORIA BECKHAM

Her short and sweet pixie may have caused a sensation when she debuted it, but Posh put a new spin on the style by sweeping up the top into a punky look.

03 of 25

MANDY MOORE

Todd Williamson/WireImage; F. Allende / Splash News

The stylish singer showed off long sandy brown locks during a Gen Art appearance, only to turn up a week later with a shorter and darker do at a party in L.A.

04 of 25

ANNA FRIEL

The Pushing Daisies star trades in the long beachy do she showed off at an Emmys party for sleek tresses and chic blunt bangs.

05 of 25

PARIS HILTON

Jackson Lee / Splash News; Will Alexander/WENN

The heiress debuted new bangs while appearing on The Late Show with David Letterman, only to sweep them back with a clip a few weeks later in London.

06 of 25

EVA LONGORIA PARKER

The actress turns up the volume on her usual bob, teasing it into a bold two-toned bouffant for a charity event in Los Angeles.

07 of 25

MAGGIE GYLLENHAAL

Clark Samuels/Startraks; Brad Barket/Getty

Evolving her signature style, the Dark Knight actress trades in her bob for a shorter, layered look.

08 of 25

KATE MOSS

The supermodel is in the pink, showing off a streaky color wash over her blonde locks for her daughter’s birthday party in London.

09 of 25

GERI HALLIWELL

Anthony Harvey/PA EMPICS/ABACA; Jon Furniss/WireImage

Ginger Spice no more! The famous redhead goes dark and lovely at a launch for her children’s book in the U.K.

10 of 25

DITA VON TEESE

Jon Furniss/WireImage; Francois Durand/Getty

The burlesque star shakes up her retro look with short, blunt bangs at the Jean Paul Gaultier fashion show in Paris.

11 of 25

SARAH JESSICA PARKER

Schroewig/Splash News; Jim Spellman/WireImage

The Sex and the City star channels Audrey Hepburn’s iconic bouffant and short side-swept bangs for the film’s DVD launch in N.Y.C. – after showing off a more modern up-do at the Berlin premiere a few months earlier.

12 of 25

KATE WALSH

It’s an elegant night at the Emmys for the Private Practice star, who chops off a few inches for a sleek, shoulder-length bob.

13 of 25

BEYONCé

For her Etta James-inspired performance on the Fashion Rocks stage, the singer waves goodbye to the signature long locks she’d shown off just hours earlier on the red carpet.

14 of 25

TYRA BANKS

The talk show host shows off straight streaked locks for a magazine party in Manhattan, but deepens her hue and cues the curls for an awards ceremony a few days later.

15 of 25

RUMER WILLIS

The budding actress debuts a new look, lightening up her hair from almost black to auburn at a special screening of The Duchess.

16 of 25

KYLIE MINOGUE

She may be known for her light blonde locks, but the Aussie star changes up her signature style with a deeper brown hue.

17 of 25

KEIRA KNIGHTLEY

In just a matter of days, the Duchess star goes from romantic chestnut locks at the film’s Toronto premiere to an edgier dark brown for its New York screening.

18 of 25

JESSICA SIMPSON

Michael Caulfield/WireImage; James Devaney/Wireimage

Taking autumn in stride, Simpson shows off darker, shoulder-length blonde locks at a performance on the Good Morning America stage.

19 of 25

CHRISTINA AGUILERA

Blink/Splash News Online; Frank Micelotta/Getty

The chanteuse takes the stage at the VMAs with new blunt bangs that add an edge to her trademark long blonde locks.

20 of 25

TAYLOR MOMSEN

Jordan Strauss/Wireimage; Anthony J. Causi/Landov

The Gossip Girl takes an edgy detour from her typically sweet style with choppy bangs and layered locks for a magazine party in N.Y.C.

21 of 25

LEIGHTON MEESTER

Shawn Ehlers/WireImage; Donna ward/ABACA

Gossip Girl’s queen bee creates a buzz showing off her newly lightened locks at a Fashion Week show in N.Y.C.

22 of 25

LINDSAY LOHAN

The actress shows off an all-natural attitude, going back to her red tresses and soft waves.

23 of 25

HEIDI MONAG

The reality star looks positively addicted to love for her appearance at a breast cancer benefit in L.A., swapping her usual lush locks for an iconic slicked-back ’80s updo.

24 of 25

JAIME KING

The actress trades her chestnut locks and long bangs for a honey-blonde hue.

25 of 25

JENNIFER LOVE HEWITT

The Ghost Whisperer star gives fans something to talk about with a curly high ponytail and choppy bangs that are a stark contrast to the sleek ponytail she showed off on the red carpet months earlier.