Parties! The style, stars and scoop from Hollywood's hottest events

Justin Timberlake traded sexy for silly as host of the Nickelodeon Kids' Choice Awards in Hollywood, where the laughs flowed as freely as the lime green slime. Nicole Kidman, Gwen Stefani, Hilary Duff, Will Ferrell, Mandy Moore, Tobey Maguire, Paula Abdul and Vince Vaughn were among the other stars who got in on the antics at the annual kid-fest, celebrating fan-favorites in movies, music and television.