What's Her Best Hair?

See the stars' latest cuts and color changes – and then vote on which do suits them

01 of 32

MEGAN FOX

MEGAN FOX
NPX/Starmax; Jason Merritt/Getty

The action star does a Transformers-worthy red-carpet switch-up of her own on the MTV Movie Awards red carpet in ‘09! The previous year, she had gone for stick-straight layers, but slicked back the top and let the ends trail in loose waves for this time around.

02 of 32

LAUREN CONRAD

LAUREN CONRAD
Landov; Juan Rico/Fame

The former Hills star sends her soft waves packing, adding chunky texture and extra inches on the MTV Movie Awards red carpet.

03 of 32

NICOLE KIDMAN

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Bryan Bedder/Getty; Asadorian-Mejia/Splash News Online

For over a year Nicole’s made pale blonde her signature look, but the actress returns to her red roots while filming in N.Y.C.

04 of 32

HAYDEN PANETTIERE

HAYDEN PANETTIERE
INF; Fitzroy Barrett/Landov

Everyone has their ups and downs – and the Heroes star takes hers in stylish stride, trying tousled waves at the Spike TV Guys Awards, then pulling her hair into a sleek updo at the MTV Movie Awards.

05 of 32

TARAJI P. HENSON

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Steve Granitz/WireImage; Jeffrey Mayer/WireImage

Forget that classic bob the Oscar nominee wore at the Academy Awards! For the MTV Movie Awards, the actress goes rock ‘n’ roll, cutting her hair into a choppy, spiked style.

06 of 32

ASHLEY OLSEN

ASHLEY OLSEN
Dennis Van Tine/LFI; Michael Jade/AdMedia

The designer gives a jagged edge to her long blunt bob, adding choppy long layers for a film premiere in Hollywood.

07 of 32

MARION COTILLARD

MARION COTILLARD
Dominique Charriau/WireImage; Jemal Countess/WireImage

Taking her look from glamorous to chic, the Oscar winner straightens her waves into a polished bob.

08 of 32

MALIN ACKERMAN

MALIN ACKERMAN
Landov; Chris Hatcher/PR Photos

The actress goes ’80s-sleek at the MTV Movie awards by slicking back her blonde hair, before going wild the next night with tousled layers for a Hollywood film premiere.

09 of 32

ANNALYNNE MCCORD

ANNALYNNE MCCORD
Dan Steinberg/AP; Jesse Grant/WireImage

It was a weekend of whirlwind beauty for the 90210 star, who attended the Chrysalis Butterfly Ball with a striking bouffant-top updo, which she traded the next night for old-school Hollywood waves at the Young Hollywood Awards in Santa Monica.

10 of 32

JENNIFER LOVE HEWITT

JENNIFER LOVE HEWITT
AP; Flynet

The famously dark-haired star adds summery blonde highlights for the Monte-Carlo Television Festival.

11 of 32

SELENA GOMEZ

SELENA GOMEZ
Goff/INF; Gus Ruelas/AP

“I cut it yesterday,” the Disney star told PEOPLE.com about her new highlighted bob. “I was sitting down in the chair, and I was going to ask for the same thing: little extensions, curling it, long.” But on the spur of the moment, she says, “I just cut it – cut it off! It feels good.”

12 of 32

HEIDI KLUM

HEIDI KLUM
IC/Flynet; Juan Rico/Fame

The supermodel proves just how sexy a bob can be at an event in her German homeland, before trying a summery updo at a charity event in L.A.

13 of 32

BEYONCé

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Mejia/Asadorian/Splash News Online; Peter Kramer/AP

For months, was all about soft waves. But she’s taking summer’s warm weather in stride with more natural, ringlet curls.

14 of 32

EMILY BLUNT

EMILY BLUNT
Jon Kopaloff/FilmMagic; Michael N. Todaro/FilmMagic

The actress highlighted her chestnut locks by letting her hair down at the Sunshine Cleaning premiere, then pulled it back into a sleek ponytail to show off new red hair at a charity event in N.Y.C.

15 of 32

KATHERINE HEIGL

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Roger Walsh /Landov; John Shearer/WireImage

hit the premiere of The Ugly Truth with brown hair that set off her dark eyes.

16 of 32

RIHANNA

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Saleem Elatab-AhmadElatab/Splash News Online; Anderson/Vila/Bauer-Griffin

Taking Hollywood’s hair-shaving trend to bold new levels, debuted freshly shorn sides that added edge to her summertime look.

17 of 32

CIARA

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Astrid Stawiarz/Getty; Landov

“Here’s my new haircut by Kiyah Wright!:) we teamed up!:),” the singer Tweeted this week of the short style that replaced her signature long tresses.

18 of 32

MICHELLE OBAMA

MICHELLE OBAMA
Joyce Boghosian/Reuters/Landov; UPI /Landov

entered the White House with a long, classic bob – but faked a shorter tucked-under style at a music event this week.

19 of 32

MEGAN FOX

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Anita Bugge/WireImage; Ramey

While promoting Transformers: Revenge of the Fallen in Germany, went for major sex appeal with a long slick ponytail. But for the Armani Privé couture show in Paris, the sultry star goes for Old Hollywood glam with face-framing soft curls.

20 of 32

JESSICA ALBA

JESSICA ALBA
Frank Micelotta/Getty; Neill J. Schutzer/Ramey

trades in her dark brown locks for a new tousled light blonde do.

21 of 32

HAYDEN PANETTIERE

HAYDEN PANETTIERE
Roger Wong/INF; Stephen Lovekin/Getty

Changing hairstyles is all in a day’s work for the Heroes Panettiere starts the day with pin-straight platinum locks for an appearance on MTV, only to arrive at the evening screening of I Love You, Beth Cooper sporting loose waves and deep side part.

22 of 32

JESSICA BIEL

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Alberto E. Rodriguez/Getty; Alex J. Berliner/Berliner Studio/BEI

The may have spent months with honey blonde highlights in her light brown hair, but at a fashion party this week she debuted a new red tint.

23 of 32

TAYLOR MOMSEN

TAYLOR MOMSEN
Astrid Stawiarz/Getty; Brian Ach/WireImage

While on set as Gossip Girl’s new Queen Bee, adds length to her signature shaggy do with long blonde extensions done in a half-up style.

24 of 32

LAUREN CONRAD

LAUREN CONRAD
Astrid Stawiarz/Getty; BSB/TKB/ZOJ/WENN

The gave up her signature hairstyle for a long brown bob – but only for the day while posing for a magazine. “I got to wear a brown wig all day,” she tweeted. “It [was] fun Kinda like playing dress up.”

25 of 32

KRISTEN STEWART

KRISTEN STEWART
Juan Rico/Fame; PR/Flynet

You might be used to seeing with tousled auburn locks, but for her new role as singer Joan Jett, Kristen dyed her hair black and went for a choppy style that shouts, “I love rock ‘n’ roll!”

26 of 32

KIM KARDASHIAN

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Tyrone Kerr/FilmMagic; Todd Williamson/WireImage

The hit the MuchMusic Awards with a tucked-under bob, which, she tweeted, was all about “channeling Marilyn Monroe.” But days later at a product launch party in Beverly Hills, she was back to her trademark lanky locks.

27 of 32

LINDSAY LOHAN

LINDSAY LOHAN
Vince Flores/Celebrity Photo; David Tonnessen/Pacific Coast News

The abandons her natural red hair for newly platinum tresses.

28 of 32

SCARLETT JOHANSSON

SCARLETT JOHANSSON
Goff/INF; Michael Buckner/Getty

The departed from the dark auburn hair that she wore for months and tried out a softer strawberry blonde look.

29 of 32

BRITNEY SPEARS

BRITNEY SPEARS
Breeden/Thompsett/Pacific Coast News; Brewer/Splash News Online

For weeks, the rocked dark brunette locks, but quickly went back to her signature blonde.

30 of 32

SOLANGE KNOWLES

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Jordan Strauss/WireImage; Splash News Online

“I. just. wanted. to. be. free. from. the. bondage. that. black. women sometimes. put. on. themselves. with. hair.” the singer Tweeted after she removed the blunt-banged wig she’d worn to an event the night before and showed off a natural, closely-cropped do on the streets of L.A.

31 of 32

MISCHA BARTON

MISCHA BARTON
James Whatling / Splash News Online; Jerritt Clark/WireImage

The Beautiful Life’s gives herself a beauty makeover, darkening her hair from chestnut to deep brown.

32 of 32

JESSICA STROUP

JESSICA STROUP
Dan Steinberg/AP; Phil McCarten /Landov

The 90210 beauty chops off her wavy locks to create a softly layered bob.

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