Jeremy Renner, Zoe Saldana and Jennifer Lawrence attend the 2013 Film Independent Spirit Awards; Hilary Swank, Emmy Rossum and others do brunch with Montblanc to benefit UNICEF; Heidi Klum and Miranda Kerr are fashionable at the QVC "Red Carpet Style" event; the casts of Silver Linings Playbook and Django Unchained party with the Weinsteins at Soho House; Kim Kardashian, Gisele Bundchen, Jeffrey Deitch, Naomi Campbell and many others celebrate Mario Testino's PRISM exhibition preview; Anna Paquin and Stephen Moyer share a Pimm's Cup at the GREAT British Film Reception—we've covered Oscar night festivities at length, but there were loads of celebrations leading up to the big show all weekend and we have the details, guests lists and photos for you in this special pre-Oscar Weekend edition of Last Night's Parties.

Justin Timberlake, Jessica Biel, Timbaland and Amy Adams attend Darren Le Gallo's art opening; Flo Rida and Kendra Wilkinson debate on who wore it better at OK! Magazine's pre-Grammy party; John Legend and Christina Milian hang with the Mayor at a music industry reception; L.A. Reid, Jeffery Katzenberg and Ciara party at Beacher's Madhouse with Epic Records; Gary Oldman, Harrison Ford and Billy Bob Thornton celebrate the opening of the Morrison Hotel Gallery by forming the ultimate boy band—okay, so they didn't form a boy band, but it's fun to pretend while getting the rundown on Thursday's top events in this installment of Last Night's Parties.

From Courtney Love's performance at the Star Bar, to Kate Bosworth and fiance Michael Polish celebrating the premiere of their film "Big Sur," to Elizabeth Olsen and Dakota Fanning hanging out with Jake Gyllenhaal's mom at the Nur Khan Lounge, Sundance parties wrapped up this weekend. Check out our round up of some of the top parties from Park City this weekend.

Sundance 2013 kicked off this weekend, and film buffs flocked to Park City again this year. From Dave Groh's sold-out concert at Park City Live with Stevie Nicks, to Jessica Biel and Ringo Starr hanging out at The Westway, to Avicii and Matisyahu's blow out performances, here is a round up of some of the top bashes from Sundance's first weekend.

Amy Adams, Kerry Washington, Leonardo DiCaprio, Bradley Cooper and more celebrate with the Weinstein Company; Anne Hathaway, Jessica Chastain, Hugh Jackman and other stars party wit NBC/Universal; Damian Lewis, Claire Danes, Zooey Deschanel and other TV actors get down at a post-show party hosted by FOX; Julianne Moore, Lena Dunham, Aaron Sorkin and dozens of other members of the HBO family hit the network's shindig—almost as important as which nominees won Golden Globes last night is where those stars chose to celebrate afterwards and we have the full rundown for you in this special Golden Globes After Party edition of Last Night's Parties.

Sarah Hyland and Chris Colfer celebrate the premiere of Struck By Lightning; stars like Elisabeth Moss and Naomi Campbell show off and field questions about their new TV shows at the Winter 2013 TCA Panel; Bradley Cooper and others make a pilgrimage to the desert for the Palm Springs International Film Festival; Naomi Watts, Bryan Cranston and many more help kick off Golden Globes Week with a party at Cecconi's Restaurant; Timothy Olyphant and the stars of FX's "Justified" step out for the season 4 premiere—get the comprehensive update on who was where during the official first weekend of 2013 in this installment of Last Night's Parties!

Anderson Cooper, Viola Davis, Adrien Brody and more help present the CNN Heroes: All Star Tribute; Rashida Jones, Zoe Saldana, Jesse Tyler Ferguson and others honor Katy Perry at the Trevor Project's 2012 "Trevor Live" event; Kerry Washington and Jamie Foxx celebrate Los Angeles Confidential's 10th anniversary; Robert Downey Jr., Jodie Foster and more play in a charity poker tournament; Will Smith, Amy Adams, Kristen Stewart and Tom Hanks attend the Academy's Governors Awards; Taylor Swift, Ellie Goulding and Ne-Yo among other pop stars light up Night 1 of KIIS FM's 2012 Jingle Ball concert—get caught up on L.A.'s top events from the weekend in this installment of Last Night's Parties.

Jennifer Lawrence, Bradley Cooper, Chris Tucker and more step out for the premiere of Silver Linings Playbook at the Academy of Motion Pictures Arts and Sciences; Ciara performs at the Key Club for the Myspace LIVE Series; Jimmy Kimmel, Julie Bowen, Ty Burrell and other ABC stars honor ABC Entertainment Group's Paul Lee and Bob Broder—get the full rundown on who was out Monday in L.A. in this installment of Last Night's Parties.

The Book of Mormon finally arrives to spread the good word in Hollywood as Christina Hendricks and Zoe Saldana are among many who attend service, Lea Michele and Kate Hudson ring in the school year at the "Glee" premiere, and Milla Jovovich kills a fresh batch of zombies in the newest installment of Resident Evil. Here's what you missed because you decided to stay home last night. More»

Sucker Punch alums Abbie Cornish and Jamie Chung attend the 2012 Tribeca Film Festival reception at the Beverly Hilton Hotel; Jason Biggs, Alyson Hannigan and the rest of the original American Pie gang get together at Grauman's Chinese Theatre for the Los Angeles premiere of American Reunion; Kathy Griffin speaks on a panel at the Weinstein Company's screening of Bully—Monday night's parties got the week started off right in Los Angeles and we've got all the details in this edition of Last Night's Parties! More»

Vanity Fair hosts an Oscar Party worthy of the entertainment gods; Kim Kardashian attends Elton John's glamorous Academy Awards viewing party; Petra Nemcova steps out for The Weinstein Company's Oscar after party; Pharrell Williams and Esperanza Spalding enjoy themselves at Hans Zimmer's post-awards show fete; Jean Dujardin gets his Oscar engraved at the Governors Ball—Awards season wasn't officially over until the Academy Awards after parties ended in the wee hours of this morning and we have  the details on the hottest events of the evening in this installment of Last Night's Parties, Oscar Night Edition! More»