Jennifer Lawrence, Liam Hemsworth, Miley Cyrus and others hit the red carpet downtown for the highly anticipated premiere of The Hunger Games; Emma Roberts, Jordana Brewster and Marisa Tomei buddy up with designer Jonathan Saunders at the kickoff cocktail party for the British Fashion Council's LONDON show ROOMS LA event at Smashbox; the one and only Slash helps unveil public art for Gibson guitars; AnnaLynne McCord, Jamie-Lynn Sigler and more catch a fashion show at the Stop Staring! event at Vibiana—it was another busy L.A. Monday with action across town and we have the lowdown on it all in this edition of Last Night's Parties. More»

Jean Dujardin beats George Clooney for best actor and Mary Tyler Moore receives lifetime achievement award at the 18th Annual Screen Actors Guild Awards; Sofia Vergara and Meryl Streep have fun with friends at the Weinstein Company and Dewar's post-SAG Awards cocktail party at the Chateau Marmont; Amber Heard dazzles fans on the red carpet as Kelsey Grammer hosts the 64th Annual Directors Guild of America Awards; Katy Perry and professional party girl Paris Hilton kick off the grand opening of 1 OAK Las Vegas; More»

Kate Hudson, Cameron Diaz, Drew Barrymore [via]

Michelle Williams, Jennifer Garner and more attend special screenings of their films showing in the 2011 AFI Fest; Robert Pattinson, Jon Hamm and more honor the work of those behind the scenes in entertainment; the first ever LACMA Art + Film gala co-hosted by Leonardo DiCaprio brings out one of the most star-studded crowds we've ever seen, with everyone from Zac Efron, Clint Eastwood and Zoe Saldana, to Stevie Wonder, Julian Schnabel and Jane Fonda—we, could keep going but we'll stop there, so come take a look at everything that went down this busy weekend in L.A. in a super-size edition of Last Night's Parties.

Guild Hall's John Drew Theater filled up on Monday night for the screening of Stephen Sondheim's "Company." Originally a Broadway, Tony-nominated play in 1970, producers Ellen M. Krass, Stewart F. Lane, Bonnie Comley and Lonnie Price transformed the musical onto the screen with a cast including Neil Patrick Harris, Patti LuPone, Stephen Colbert, Jon Cryer and Christina Hendricks. More»

• Mike's apartment still bumping. [Gawker]

• Brittany Murphy's autopsy report confirms that the actress was not abusing drugs. [EOnline]

• Bono a total diva at Butter. [NYDN]

• Coroner says Casey Johnson's death from untreated diabetes. [CNN]

• After a desperate search by his family, Growing Pains star Andrew Koenig found dead. [People]

• It's a snow day, just not for GofG - the city's still buzzing, man! [NYP]

• Jon Cryer's ex wife allegedly had a hit out on him. That's awkward. [TMZ]

• Levi Johnston ordered to pay up. [Intel]