Fall’s Hottest Hair Makeovers

Credit:

Katherine Heigl

Heigl seems to have more fun as a blonde. Six months after she dyed her hair brown for a movie role, she went back to her lighter roots. "I was pretty shocked at first," she told UsMagazine.com after she first went dark. "I was like, 'Wow, it's dark, that's not just brown, that's black!'"

Credit:

Ashlee Simpson

Pete Wentz revealed his wife's transformation from long ombre-colored hair to a natural-blonde pixie style on Twitter. "Cute hair mama!" he wrote.

Credit:

Vienna Girardi

When Girardi entered the salon for a hair cut, she teased her followers on Twitter, "Hint: no more extensions!" Indeed, Girardi emerged with a new sleek bob.

Credit:

Jared Leto

Although Leto has sported mohawks, faux hawks, and more, he's gone back to a simpler style with this short cropped cut.

Credit:

Hilary Duff

Less than a week after getting hitched to Mike Comrie, Duff went dark. For the style switch-up, she relied on the pros at Byron and Tracy Salon -- and her big sister Haylie, who tagged along for the makeover.

Credit:

Lindsay Lohan

After going blonde, LiLo -- in between rehab stints -- returned to her trademark fiery hue that made her famous in flicks like The Parent Trap and Mean Girls.

Credit:

Leighton Meester

The Gossip Girl star went back to her natural blonde roots in the spring but has since returned to the chocolate brown hue she's known for. "The vibrant auburn looks natural and gives her complexion a healthy glow," says celebrity hair pro Ted Gibson.

Credit:

Carey Mulligan

Mulligan, who sparked a pixie craze with her cropped cut, is finally letting it grow out. "It's driving me crazy," she told London's Daily Mail.

Credit:

Nicole Richie

Richie debuted her shorter, blonder look on her Web site with a shout out to her stylist Andy Lecompte and colorist George Papanikolas. "Last night we played Clueless. Andy and George played Cher & Dionne, and I played Tai," she blogged. "Aaahhh!! Project!"

Credit:

Kelly Osbourne

After trying out a lavender color in March, Osbourne went back to her natural blonde. "I am having fun with it," Osbourne, 25, told UsMagazine.com. "I love experimenting and trying new looks."

Credit:

Jada Pinkett Smith

The addition of bangs "put the focus on her pretty almond-shaped eyes, and they cover her forehead for instant polish and sophistication," says celebrity hair pro Ted Gibson.

Credit:

Snooki

Snooki swapped her signature poof for bangs and blonde highlights. The stylist behind the look, Antonio Rosa, said, "She was very, very nervous, but she loved them. She said she hoped she could get used to it."

Credit:

Lea Michele

The Glee star's bangs and ombre highlights work perfectly with her face shape and skin tone. "Sideswept bangs and ombre color soften her strong features for a more feminine look," celebrity hair pro Ted Gibson says.

Credit:

Emma Watson

Watson chopped off her flowing locks for a cute pixie cut. "Oh my God, it was the most liberating thing!" she told EW.com. "The stylist just grabbed the back of my hair and took a whole ponytail of hair out. It felt amazing. I love it."

Credit:

Jennifer Lopez

The singer lightened up her locks just in time to begin her stint as a judge on American Idol.

Credit:

Ashley Greene

The addition of bangs "put the focus on her pretty almond-shaped eyes, and they cover her forehead for instant polish and sophistication," says celebrity hair pro Ted Gibson.

Credit:

Amy Brenneman

The Private Practice star cropped her signature curly hair while she was being treated for a chronic intestinal disease.

Credit:

Demi Lovato

After her break-up with Joe Jonas, Lovato lightened up. "I love, love, love my new hair! It's so light!" she Twittered. "I have blonde in my hair. Ahhhhh!"