Following a fully-loaded week of pre-parties in anticipation of the 2013 Oscars, last night boasted some of the most lavish, star-studded events of the year for the final hurrah of awards season. Between the annual Governors Ball, Vanity Fair party and Elton John's Viewing party, all of Hollywood came out to celebrate the 85th Annual Academy Awards and we have the guest lists, photos and details from inside for you in this special Oscar Night edition of Last Night's Parties.

Alan Tudyk, Seth Green and others honor the best in animation at the Annie Awards; Anne Hathaway, Ben Affleck, Lena Dunham, Steven Spielberg and more attend the Directors Guild of America Awards; Kerry Washington, Samuel L. Jackson and Halle Berry among many more hit the NAACP Image Awards; Jessica Alba and Hugh Jackman walk the red carpet at the premiere of Escape From Planet Earth; Jane Seymour attends the Art Directors Guild Awards; David O. Russell helps honor Jennifer Lawrence at the Santa Barbara International Film Festival—get caught up on the weekend's top events in this installment of Last Night's Parties.

[Scott Harrison, Seth Meyers] [Lindsay Ellingson]

Last night in NYC, Seth Meyers hosted the 7th annual Charity Ball with charity:water founder Scott Harrison, Mick Jagger came out to support L'wren at The Carlyle, Karlie Kloss and Christina Tosi decorated cookies together at FEED's How to Gift Squared Holiday Party, and more!

Keira Knightly and costars step out for the Hollywood premiere of Anna Karenina; Drew Barrymore, Ben Stiller, Dita Von Teese and more help Kimberly Snyder launch her new juice bar in West Hollywood; Jesse Tyler Ferguson, Aisha Tyler, Julie Bowen and others celebrate marriage equality; Johnny Depp, Sarah Silverman and Nick Valensi cover Tom Petty and the Heartbreakers hits for charity; GQ hosts their annual "Men of the Year" party at Chateau Marmont with guests Rihanna, Ben Affleck, Aaron Paul and many more; Stevie Nicks performs at The Women's Guild Cedars-Sinai 55th Anniversary Gala—get the rundown on who was out at Tuesday and Wednesday's top events in this double dose of Last Night's Parties.

Go HERE to see more photos from the night by Kenneth Chan!

Last night the Writers Guild Theater rolled out the red carpet for the star-studded premiere of PBS documentary Inventing David Geffen as part of their "American Masters" portrait series. The special, airing November 20th, follows David Geffen's unique journey from the William Morris mailroom in the 60s to becoming one of the most powerful pop culture influencers, philanthropists and forces in Hollywood. From Tom Hanks, Ron Howard and Tom Ford to Dr. Dre and Cher, here's a look at the supremely A-list crowd of movers and shakers who stepped out to honor the highly esteemed entertainment mogul.

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.

Jason Moore, Anna Kendrick, Rebel Wilson, Elizabeth Banks, Max Handleman [via]

Elizabeth Banks, Anna Kendrick and Brittany Snow come together at the premiere of Jason Moore's new movie Pitch Perfect; Chris Paul shows up with his wife and family to celebrate his GQ's October issue cover; "Dancing With The Stars" cast members grab some cocktails at Mixology 101 after last night's performance episode—join us as we bring you up to speed on Monday's top red carpet events in this installment of Last Night's Parties.

Women in Film Crystal + Lucy Awards brings out the likes of Meryl Streep, Viola Davis and Chloe Moretz among, some of Hollywood’s most iconic actresses; Katy Perry and Alicia Keys rock out at the City of Hope's Music And Entertainment Industry Group event to honor Bob Pittman; Selena Gomez and Larry David step out to support The Alliance For Children's Rights—it was a bustling Tuesday with various events across town and we have the details on what went down in this installment of Last Night's Parties. More»

[Lally Weymouth, Kate Hudson, Matthew Bellamy] From NPR's Friday Night Spin party to the Washington Post Pre-WHCD Reception to the A-List Vanity Fair/Bloomberg after-party, find out what and who you missed in Washington over White House Correspondents' Association Dinner Weekend! More»

Last night in NYC, Naomi Watts and Liev Schreiber stepped out together for Chanel's Tribeca Film Festival Artists Dinner, Rihanna, Hillary Clinton, and Jeremy Lin were among the many stars honored at the Time's 100 Most Influential People Gala, Greta Gerwig attended the after party for Lola Versus, The Big Pink rock out at the Electric Room, and so much more. Last night's parties were all about throwing down with the most influential people in the world! More»

Jack Black and Shirley McLaine ham it up for the cameras at the premiere of their new movie; Kim Kardashian, Busy Philipps and more step out for Us Weekly's Hot Hollywood Style Issue event at Greystone; ASCAP presents their 2012 Pop Music awards to Katy Perry, Carly Simon, David Guetta and others; Emma Roberts and Julia Roberts make a movie premiere a stylish family affair; Rihanna sings for Steven Spielberg, Rita Wilson and many others in Hollywood to benefit breast cancer research—L.A. was hopping with events all over town Wednesday night and we have your details on the best ones that went down in this edition of Last Night's Parties. More»