Judd Apatow, Leslie Mann, Maude Apatow via
Nikki Reed, Minnie Driver, Mark Salling and others celebrate "The Scenemakers" with Express and Vogue at Chateau Marmont; Neil Patrick Harris and David LaChapelle attend the opening of Art Platform - Los Angeles; Hailee Steinfeld, Sarah Hyland and many more step out for Teen Vogue's Young Hollywood party; Tom Hanks, Billy Crystal and Martin Short give a Shakespeare reading at UCLA; Kevin Connolly and Jamie Chung hit the Hotel Noir premiere—see how L.A. got a pretty aggressive head-start on weekend festivities in this edition of Last Night's Parties.