Hollywood's Most Buzzed-About Beauty

From Emma Watson's shocking pixie to Katy Perry's Brand-ed nails, stars got fans buzzing with outrageous hair and makeup shake-up

01 of 21

EMMA WATSON'S PIXIE

EMMA WATSON'S PIXIE
Ian West/Press Association Images/Abaca

"Generally the reaction's been positive, but it's a bit of a shock for some people because it's different," said the actress of her post-Harry Potter chop, after no longer being to keep her hair the same for the film series' continuity.

02 of 21

KATY PERRY'S BRAND-ED NAILS

KATY PERRY'S BRAND-ED NAILS
Kevin Mazur/WireImage

Katy let her fingers do the talking in the run-up to her nuptials, grabbing headlines at the MTV Video Music Awards with nails printed with vignettes of her husband-to-be, Russell Brand – including a risqué undies-clad pinkie shot.

03 of 21

TAYLOR MOMSEN GOES GOTH

TAYLOR MOMSEN GOES GOTH
Pete Mariner/Retna/iPhoto

After reviving raccoon eyes as her pet beauty project, Taylor evolved her look from rock 'n' roll vixen to goth girl with the addition of vampy burgundy lips.

04 of 21

JUSTIN TIMBERLAKE'S BUZZ CUT

JUSTIN TIMBERLAKE'S BUZZ CUT
Splash News Online

Justin said "Bye, Bye, Bye" to his curls, shearing them off into a cropped look that had most fans singing its praises.

05 of 21

JESSICA BIEL CURLS UP AND DYES

JESSICA BIEL CURLS UP AND DYES
Debbie VanStory/iPhoto

Justin Timberlake wasn't the only doing a little hair-raising with a new look. His girlfriend Jessica took her soft brunette waves to almost black.

06 of 21

ASHLEE SIMPSON-WENTZ'S HUBBY-APPROVED HAIR

ASHLEE SIMPSON-WENTZ'S HUBBY-APPROVED HAIR
Jordan Strauss/WireImage

After breaking the news of his wife's platinum pixie cut via Twitter, Pete Wentz was the first to compliment the look. “If I bleached my hair, all of a sudden I look like Charlie Brown,” he joked to PEOPLE about Ashlee's new short do, adding, “My wife is the hottest woman I know, so it’s rad.”

07 of 21

RIHANNA'S RED ALERT

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Christopher Polk/Getty

The singer set the blogosphere ablaze when she changed up her hair to fire-engine red.

08 of 21

J.LO'S FLIGHT OF FANCY

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Joanne Davidson/PictureGroup

The mom to two followed her nesting instincts in the most glamorous way possible, piling her hair into a sky-high chignon that some readers loved – and others deemed strictly for the birds.

09 of 21

MICHELLE'S SHORT CUT

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James McCauley/Rex USA

Taking a hairpin turn off the standard Hollywood road to beauty, Williams cut her long hair into a short pixie style that got readers buzzing.

10 of 21

BRAD'S DISAPPEARING BEARD

BRAD'S DISAPPEARING BEARD
Jon Furniss/WireImage; Fame

After perplexing fans for months with an ever-growing – and occasionally beaded! – beard, Pitt shaved off his grizzled thatch and time-traveled back to his formerly dapper self.

11 of 21

KATHERINE UPS THE VOLUME

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Jon Furniss/WireImage

Who loves the '80s? Heigl's sprayed-to-stay coif reintroduced the term "helmet head" to a whole new generation.

12 of 21

JENNIFER'S BREAKUP BOB

JENNIFER'S BREAKUP BOB
Jason Merritt/WireImage

You can wash that man right out of your hair! Love Hewitt lopped off her long hair into a saucy bob after splitting with boyfriend Jamie Kennedy.

13 of 21

BRODY'S LOCKS OF LOVE

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Eric Brogmus/INF

Forget PDA tattoos! Love was in the hair for the Hills star, who shaved the initial of his ladylove Avril Lavigne into the side of his Mohawk.

14 of 21

GAGA'S GRAY PRIDE

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Doug Meszler/Splash News Online

There's not a lot that Lady Gaga can do to shock and awe anymore – but turning her platinum locks gray certainly got fans talking.

15 of 21

LINDSAY'S JAILHOUSE LOCKS

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David McNew/Getty

With her extensions tangled up in jail rules, Lohan was allowed to head to the slammer with her longs locks intact. Whew!

16 of 21

JANUARY MAKES HER MARK

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Evan Agostini/AP

Rocking an abundance of smoldering shadow, the Mad Men star put a high-fashion spin on a masked marauder's style.

17 of 21

KATE'S EXTENSIONS

KATE'S EXTENSIONS
Melanie Dunea

After enduring a 20-hour makeover, Gosselin traded in what some dubbed a "reverse mullet" for extra-long extensions.

18 of 21

SNOOKI'S HARD-HEADED DEVOTION

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Jason Merritt/Getty

Snooki's boyfriends may come and go, but her one steady has always been her signature pouf. The reality starlet stayed true to the same bumped-up style from the Jersey Shore to Miami Beach and back.

19 of 21

KELLY'S PIXIE CUT

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B. Ach/INF

The pixie even made its way to Dixie! The country star debuted her short cut exclusively to PEOPLE.com readers, saying, "It was so damaged I looked like a scarecrow so I chopped it off!”

20 of 21

JESSICA WIGS OUT

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Courtesy Ken Paves

Sharing her in-flight fun, Simpson took to Twitter to unveil a series of shots of her in wigs – including this one, which her BFF hairdresser Ken Paves dubbed "Aunt Sally."

21 of 21

ADRIAN QUITS HIS CURLS

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Jason Merritt/Getty

The Entourage star left fans divided when he traded his signature curls for a closely cropped cut.

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