What's Her Best Hair?

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TAYLOR SWIFT

abandons her signature corkscrew curls for a one-night fling with straight hair and blunt bangs at the AMAs.

02 of 29

HEIDI KLUM

In true supermodel fashion, takes her look to a whole new level with instant inches of honey-blonde hair.

03 of 29

RIHANNA

After a brief encounter with long, straight hair, curled up with a mane of ringlets.

04 of 29

ELISABETH MOSS

Martin Roe/Retna; Amanda Schwab/Startraks

The Mad Men star stepped out of character, swapping her short cut for longer, romantic locks.

05 of 29

ASHLEY GREENE

The Twilight takes her hair to the dark (red) side after months with sunny highlights.

06 of 29

JULIANNE HOUGH

George Shepherd/AdMedia; Scott Kirkland/Globe

Could her “phenomenal have a thing for brunettes? heats up the CMA Awards red carpet with a darker hue that leaves her blonde hair color far behind.

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ANNALYNNE MCCORD

The 90210 star evolves from a kitten to a lioness by letting her natural curls run wild.

08 of 29

LEELEE SOBIESKI

The young mom trims her collar-grazing curls into a chic-and-easy blunt bob.

09 of 29

JESSICA BIEL

Fotonoticias/WireImage; Debbie VanStory/iPhoto

sweetens her style with a new chocolate-brown hue.

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ANNE HATHAWAY

After shaping her waves into a screen-siren coif, goes for ’60s-inspired drama by switching to a center part.

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NICOLE RICHIE

Since debuting a blonde-bombshell bob earlier in the year, the has kept her hairdresser busy, taking the cut to shorter and shorter lengths.

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RIHANNA

keeps her love affair with fire-engine red burning – but adds inches in length that puts her curls on the straight-and-narrow.

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SCARLETT JOHANSSON

After chopping off her long hair on a whim, has traded in her sexy tousled bob for a shorter, sleeker do.

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ROSE BYRNE

The Damages star adds heavy fringe to her long bob with the help of her mane man, Harry Josh.

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LEONA LEWIS

Pascal Le Segretain/Getty Images; Paul Marks/Broadimage

The songstress trades her honey highlights for dark chocolate tresses and on-trend bangs at a movie premiere.

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JULIA STILES

Jordan Strauss/WireImage; Jamie McCarthy/WireImage

The towheaded Dexter star takes her long hair up a notch, showing off blunt bangs during New York Fashion Week.

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JENNIFER ANISTON

Since her days rocking “The Rachel” in the 1990s, Aniston has stayed true to her long layers – but she changed up the look this week by trimming off a few inches of length.

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LAUREN CONRAD

The SoCal gives her look new life by darkening up her honey hair.

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SANDRA BULLOCK

Peter Brooker/Rex USA; Steve Granitz/WireImage

The kicked off red carpet season with a bold beauty makeover: high-fashion blunt bangs.

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KHLOE KARDASHIAN

“I had to dye my hair back to brown,” the reality star announced on Twitter, only days after dying her hair a strawberry blonde. “I love being a brunette don t get me wrong but red was SOO much fun! I was only red for a like a week :(,”

21 of 29

OLIVIA WILDE

Marion Curtis/Startraks; Kyle Rover/Startraks

The Tron star transformed her long hair with the addition of a lash-sweeping fringe.

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KATE BECKINSALE

Adios brown hair! The famous jetted to Mexico with a golden blonde color that left her almost unrecognizable.

23 of 29

MICHELLE WILLIAMS

The singer abandons her on-trend short cut for another of-the-moment style: the sexy shag do.

24 of 29

CHRISTINA AGUILERA

Jon Furniss/WireImage; Semmer/Face To Face/iPhoto

The Burlesque says auf wiedersehen to her long waves, trading them for milk-maid braids at the movie’s Berlin premiere.

25 of 29

KRISTEN BELL

stays true to her blonde-bombshell status, but makes over her look – just for the night – by faking a bob with a stylish tuck-under.

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JESSICA ALBA

“I wanted to go shorter, but I don t have the courage to go as short as I want – so this is like a happy medium. I can still throw it in a pony tail the told PEOPLE of her new sleek bob.

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