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LONG STORY After lightening up for roles in _Sin City, Fantastic Four_ and _Into the Blue,_ Jessica Alba got back to her roots, showing off toffee-colored extensions at the MTV Movie Awards.
FRAMED! Anne Hathaway traded her _Princess Diaries_ waves for a sleek look topped off with face-framing fringe (in New York City). GOING PLATINUM Brad Pitt hit the (peroxide) bottle,
debuting a bleached do in Santa Monica on Monday. According to his rep, the _Mr. amp Mrs. Smith_ star changed his look just for fun. BLACK MAGIC Sarah Michelle Gellar has given up her blonde
_Buffy_ locks and gone over to the dark side (last week in New York) for her upcoming supernatural thriller _Revolver._ FUZZY MATTERS Natalie Portman, who shaved her head for a role in the
upcoming film _V for Vendetta,_ showed off her clean pate at the Cannes Film Festival on May 15. What do you think of it? DÉJA VIEW Former blonde Nicky Hilton dyed her hair brown last year,
but recently lightened up again (in New York City recently). BRIGHTENING UP Like her beau Brad Pitt, Angelina Jolie has gone blonde. In New York City recently, she revealed her lighter side
with blonde highlights for her role in the upcoming movie _The Good Shepherd._ ON THE CHIN Paris Hilton traded her long locks for a face-framing platinum bob, which she showed off at the
Teen Choice Awards recently. CLOSE SHAVE _Dukes of Hazzard_ star Seann William Scott recently got a buzz cut (but left his five o'clock shadow) for an upcoming role in the twisted
musical-comedy _Southland Tales._ SHORT CUT Britney Spears sported newly cropped locks in Malibu last week. Maybe she's going low-maintenance in preparation for the arrival of her baby
with husband Kevin Federline in the fall. DYE JOB Topher Grace revealed a lightened mane (and matching brows) in Hollywood last week. Why the change? "It's for reasons that are
legit," he tells PEOPLE. "I'm not supposed to talk about the blond hair or _Spider-Man_." (He's joining the third installment of the movie series.) SLIM
PICKIN'S Jack Osbourne, weighing in at 179 lbs., showed off a trim physique in London recently. Since April he's shed 30 lbs. by running daily and avoiding carbs. "I want to
have a six-pack. I want abs of steel," he says. FLASHBACK! Mandy Moore, who traded her long, blonde locks for a shorter look years ago, recently got back to her roots (in Los Angeles on
Sept. 10). A GOOD THING? Martha Stewart sported auburn locks on her talk show, _Martha,_ on Sept. 28. But the domestic diva didn't dye – she was just wearing a wig for an episode on
redheads. SHORT AND CHIC Lindsay Lohan bid goodbye to her long curls and unveiled a shorter, straighter do at a New York Fashion Week party hosted by Christian Dior on Sept. 14. Read more: