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.

Soho House Lydia Hearst Byrdie Bell Nicky Hilton Leven Rambin Cameron Richardson Olivia Thirlby david lachapelle Fran Drescher Tom Hanks Chateau Marmont Jenna Dewan Rita Wilson Neil Patrick Harris Martin Short Kevin Connolly Joe Jonas Kevin Jonas William Shatner Debby Ryan christian serratos Jamie Chung Jessica Lowndes Romeo minnie driver Leslie Mann Nikki Reed Carla Gugino Gillian Jacobs Mark Salling Piero Golia Louise Roe Sarah Hyland Lucy Hale Ariel Winter Lisa Edelstein Jeffrey Soros Soho House West Hollywood Barker Hangar Billy Crystal Hailee Steinfeld Ed Moses Michael Patrick Bella Thorne Maggie Kayne Cedric The Entertainer Jena Malone Claire Holt Aimee Teegarden Matt Prokop Jackson Rathbone Julia Jones Danielle Jonas Kathleen Robertson Elizabeth Sobieski Aimee Garcia Azita Ghanizada Victoria Justice. Eugene Sadovoy Erica Dasher Pia Toscano Maude Apatow Alex Van Halen Kim McCarty Cody Kennedy Hotel Noir Sebastian Gutierrez Express And Vogue Celebrate "The Scenemakers" Danielle Watts Mathieu Schreyer Hotel Noir Premiere Art Platform Art Platform - Los Angeles Art Platform Los Angeles 2012 Art Platform Los Angeles at Barker Hangar The Shakespeare Center Of Los Angeles' 22nd Annual "Simply Shakespeare" Freud Playhouse at UCLA Simply Shakespeare Ben Donenberg Inez Suen Adam Gross Jen Garcia Aly Pohland Charley Pohland Bruce Heylander Kerry English Olga Garay-English Joel Smith Morgan Smith John Geresi Jean Geresi Alli Subtnick Nancy Jane Goldston Jennifer Simchowitz Natasha Simchowitz Michael Rosen Gale King Robert Russell Gail Hollander