Celebrity What's Her Best Look? Changing hair and makeup is all in a day's work By People Staff Published on November 13, 2007 05:00 PM Share Tweet Pin Email 01 of 09 MISCHA BARTON Evan Agostini/Getty; Jimi Celeste/PatrickMcMullan.com/Sipa The star ditched her long, blonde curls to debut a shorter, darker do at a party in New York City this week. More on Mischa:See the latest photos, news and a full bio 02 of 09 SARAH MICHELLE GELLAR The actress has had long, highlighted hair for quite a while, only to hit the streets of L.A. with a darker bob this week. Previous What's Her Best Look? > 03 of 09 JESSICA BIEL Dara Kushner/INF; Andrew Shawaf/Pacific Coast News New role, new hair! The actress showed off her newly brunette locks while filming Powder Blue in Los Angeles. More on Jessica:See the latest photos, news and a full bio 04 of 09 KELLY CLARKSON Gus Ruelas/ap; Denise Truscello/WireImage The singer had been rocking a brunette bob for a while, only to turn up in Vegas this weekend with light blonde locks. More on Kelly:See the latest photos, news and a full bio 05 of 09 PARIS HILTON AXELLE/BAUER-GRIFFIN; Chris Weeks/WireImage The heiress took a short cut – leaving out her trademark extensions – at the Las Vegas debut of her new sportswear and denim lines. More on Paris:See the latest photos, news and full bio 06 of 09 HILARY DUFF Marc Andrew Deley/FilmMagic; Devan/INF The singer ditched her dark brown hair for a lighter, caramel shade that she showed off at the Teen Choice Awards. More on Hilary:See the latest photos, news and a full bio 07 of 09 JESSICA ALBA Lalo Yasky/WireImage; Devan/INF The actress has been sporting dark brunette locks for months, only to turn up to accept her female hottie award at the Teen Choice Awards with newly lightened look. More on Jessica:See the latest photos, news and a full bio 08 of 09 DIANE LANE Kirsty Wigglesworth/AP; Luis Martinez/Splash News Online The actress had a classic bob after chopping off her hair for charity last year, but cut it even shorter into an edgy pixie last week. 09 of 09 MICHELLE WILLIAMS Danny Moloshok/AP; Jackson Lee/Splash News Online The newly single star debuted her blonde pixie cut back in February, only to surface recently with grown-out brunette locks.