[Jon Hamm, Justin Timberlake, Hailee Steinfeld] Rachel Bilson and NYLON host dinner at a new restaurant for Ashlee Simpson and Shenae Grimes; Mia Moretti, Caitlin Moe, and Camilla Belle celebrate the reopening of a Chopard boutique with other diamond-lovers and champagne; Jessica Biel plays dinner host with Joe Zee at Chateau for Justin Timberlake, Hailee Steinfeld, Jon Hamm and more; Samantha Ronson and Nicole Richie party at Milk boutique's new pop-up shop; George Clooney, Cindy Crawford and others step out for Alexander Payne's new movie premiere—Tuesday night had plenty to keep this town busy, get all the details on what went down in this edition of Last Night's Parties.

[Jon Hamm, Justin Timberlake, Hailee Steinfeld via]

Soho House Scott Sartiano Evan Ross Rachel Bilson Samantha Ronson Rose McGowan Marcia Gay Harden Nicole Richie George Clooney Molly Sims Virginia Madsen Cindy Crawford Ashlee Simpson Lance Bass Miles Fisher Shenae Grimes DJ Mia Moretti Caitlin Moe Jay Leno Stacy Keibler Mila Kunis camilla belle Trevor Donovan Rande Gerber Shailene Woodley Kennedy Marvin Scott Jarrett Molly Ringwald Jennifer Carpenter Beau Bridges Tom Rothman Judy Greer Vincent Piazza Tom Cavanagh South Coast Plaza Kate Linder OK Go Pauley Perrette Ioan Gruffudd Martyn Lawrence-Bullard Jim Gianopulos Nancy Utley Faith Ford Aidan Quinn Jaclynn Jarrett Tyson Ritter Nadine Coyle Robert Forster Alexander Payne Matthew Lillard Dia Frampton Chopard Celebrates Reopening Of South Coast Plaza Boutique With Marc Hruschka And Elizabeth And Henry Segerstrom Marc Hruschka Richard Anderson Scott Green. NYLON Magazine And American Eagle Celebrate November Issue With Cover Star Rachel Bilson At Sherbourne Sherbourne Donovan Rachel DiCarlo Time Warner Signature Home Celebrity Event At The Soho House Adam Ferrara Peter Walsh Phil Morris Shea Curry Tom Cavanaugh. If Pockets Talked At Milk Pop Up Shop Launch Party Milk Boutique Masha Gordon Jaguar Land Rover Party Benjamin Mckenzie Mayra Veronica "The Descendants" Los Angeles Premiere - Red Carpet Jon Avnet Nick Clooney Samuel Goldwyn