Celebrity He Cleans Up Well! Even the sexiest men have bad days. See how these celebs transform from rough around the edges – to polished, red carpet gems By Melissa Liebling-Goldberg By People Staff Published on October 19, 2006 08:00 PM Share Tweet Pin Email Trending Videos 01 of 12 ASHTON KUTCHER LIMELIGHT PICTURES;Photorazzi The Guardian star doesn't sweat his style choices when hitting the gym in Los Angeles, but the former model looks runway ready (in Dolce amp Gabbana) at a London premiere. 02 of 12 LEONARDO DICAPRIO MWD/X17agency;Evan Agostini/Getty The Departed star goes for comfort, padding around L.A. in cozy slippers. For a New York City premiere, though, the actor suits up (with proper shoes, of course). 03 of 12 PETER SARSGAARD Aaron St. Clair/Splash News;Gregory Pace / BEImages The new dad is fit to be tied – via a Matthew McConaughey-worthy bandanna – for bumming around his New York 'hood, but is slick for a premiere. 04 of 12 DIDDY Dara Kushner/INF;juan Rico/Fame The rapper is usually impeccably dressed – after all, he's won awards for his Sean John clothing line – but Diddy goes super-casual in a zip-up jacket and baggy jeans. He switches back to his signature polished look for a New York fashion event. 05 of 12 JOSH HOLLOWAY Shawaf Shirley/Pacific coast news;zach lipp/admedia Is he Lost with casual clothes? In Los Angeles, Holloway personifies the phrase "bumming around town," but for the Screen Actors Guild Awards, he's untouchable with a sleek, spiffy look. 06 of 12 BEN AFFLECK fame;Lester Cohen/WireImage The Hollywoodland star lets his love of the Boston Red Sox go to his head – with an omnipresent baseball cap – but he leaves his team spirit at home for his Los Angeles premiere. 07 of 12 JOSH HARTNETT Richard Beetham/Jason Winslow/Splash News;Francois Durand/Getty Low key and casual, the The Black Dahlia actor blends into the crowd (unlike girlfriend Scarlett Johansson). He switches things up on the red carpet at the Deauville Film Festival, looking sharp in a tailored suit. 08 of 12 TIM MCGRAW NANCY RIVERA- ACE PICTURES;BARRY TALESNISK-IPOL-GLOBE PHOTOS A little bit country, a little bit sloppy (left)? The singer takes it easy off-duty, but rises to the occasion in an all-black ensemble for an event in New York. (Hmmm ... Perhaps fashionable wife Faith Hill had a say in his style?) 09 of 12 KEVIN FEDERLINE Ginsburg/Spaly/Splash News;inf Oops! He did it again! Baggy shorts and baseball caps may be the aspiring rapper's signature look, but he makes beautiful music in a crisp suit in New York. 10 of 12 HEATH LEDGER JLM/Splash News;Lisa O'Connor/ZUMA Is this the same guy? Almost incognito in khakis and a full beard, the Oscar winner sets himself apart from the crowd on the red carpet. 11 of 12 JOHN MAYER Mark Sullivan/WireImage;Jon Kopaloff/FilmMagic His wardrobe is a wonderland! Mayer keeps it casual with a low-key, hipster look – unless he's at the Grammy Awards, where Mayer ditched the hoodie for high-end fashion. 12 of 12 GEORGE CLOONEY 589/Most Wanted/ZUMA Press;Frazer Harrison/Getty Does he ever really look bad? The always suave actor hangs out in L.A. in a basic black ensemble. For the Academy Awards, Clooney shows the right way to work a black tie look, in a classic Armani tuxedo.