Mila Kunis, Jon Hamm, Jason Bateman and more step out for St. Jude's 50th Anniversary Gala; Audi kicks off Golden Globes week at Cecconi's with Zoe Saldana, Thomas Jane and Julie Bowen; Fox has a Winter All-Star Party with Zooey Deschanel, Lea Michele and other network stars; Angelina Jolie, a cane-wielding Brad Pitt, George Clooney and a slew of others hit a gala in Palm Springs; Sinead O'Connor performs for Mark Mothersbaugh at Palihouse; Elle MacPherson is approaching 50 (gasp!) and is still the hottest woman at NBC/Universal's Winter bash—it was a fully-loaded weekend of galas, awards and parties for the Hollywood set and we have all your details in this very large edition of Last Night's Parties. More»

Justin Timberlake, Jessica Biel and a pregnant Hilary Duff step out to support brain cancer awareness and medical research; Jon Hamm, Jenna Fischer, Nicole Richie and Eli Roth go to Spare Room to party for Mindy Kaling's new book; a very Twi-tastic premiere after party for Breaking Dawn takes a turn for the 90s with a mini Can't Hardly Wait reunion—L.A. was buzzing with events here and there on Monday, get the details in this edition of Last Night's Parties. More»

[Inside HBO's 2011 Emmy after party via] Jon Hamm, Cloris Leachman, Emily Blunt, and nearly 4,000 others sit down for dinner together at the Governor's Ball; Padma Lakshmi, Stevie Nicks, Steve Buscemi and more party with Entertainment Tonight; stars and crew of "Mad Men" and "Breaking Bad" celebrate wins at Mr. C; half of Hollywood turns out for HBO's annual mega-bash at the Pacific Design Center—Sunday was one of the busiest nights of party hopping in town and we have all the details on the best post-award show fetes in this Emmy edition of Last Night's Parties. More»

Hollywood biggies like Annette Bening, Warren Beatty, Martin Sheen and Geena Davis honor women in film while Katie Holmes and Elle Fanning hug it out; AnnaLynne McCord, Samantha Ronson, Ryan Phillippe, Danny Masterson and more young Hollywood celebrate the Joseph Abboud watch collection with Esquire Magazine; Rachel Zoe and Rodger Berman hit the red carpet with baby Skyler and make the lackluster responsibilities of parenthood look chic at Petit Tresor—this and more all went down yesterday and we have the details you care about so come catch up with us on everything from last night's parties. [Photo via] More»

via la.guestofaguest.com: Never thought you'd see Harry Crane, the timid, bespectacled Head Of Television at Sterling Cooper Draper Pryce, let loose like this, did ya? MORE>>

Bet you never thought you'd never see "Mad Men's" Rich Sommer front and center in a synchronized arm raise as if he's doing the YMCA dance. More»

Go HERE for more photos from the night and tag yourself and your friends!

Wednesday night, an exceptionally dapper crowd of Angelenos turned out to celebrate the launch of the Social Primer for Brooks Brothers limited-edition bow tie collection by K. Cooper Ray. More»