1 of 25
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.
2 of 25
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.
3 of 25
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.
4 of 25
The Pushing Daisies star trades in the long beachy do she showed off at an Emmys party for sleek tresses and chic blunt bangs.
5 of 25
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.
6 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.
7 of 25
Evolving her signature style, the Dark Knight actress trades in her bob for a shorter, layered look.
8 of 25
The supermodel is in the pink, showing off a streaky color wash over her blonde locks for her daughter’s birthday party in London.
9 of 25
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
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
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
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
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
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
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
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
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
Taking autumn in stride, Simpson shows off darker, shoulder-length blonde locks at a performance on the Good Morning America stage.
19 of 25
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
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
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
The actress shows off an all-natural attitude, going back to her red tresses and soft waves.
23 of 25
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
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.
Lady Gaga Says Mom's Wedding Dress Is Her All-Time Favorite Accessory
A PSA From Kylie Jenner: Beware of 'Dangerous' Counterfeit Lip Kits
Kris Jenner and Corey Gamble Wear Matching Camouflage Outfits, But They Can't Hide Their Love
WATCH AND SHOP: This Weekender Bag Can Fit 2 Weeks Worth of Clothes