Last night in NYC, Madonna, John Travolta, Kelly Osbourne and Jenna Lyons all attended the world premiere of "Madonna: The MDNA Tour," Courtney Love, Tory Burch, Shala Monroque, and more had fun in The Rain Room for the MoMA PS1 2013 Benefit Gala, Leandra Medine, Emily Weiss and Victor Cruz were among the honorees at Refinery29's 30 Under 30 celebration, and so much more!

[John Travolta and Princess Diana dance at the White House, 1985. Nancy Reagan is in the white dress behind them with President Reagan.]

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.

Tenacious D heads back to prom at to support a worthy cause; Julie Benz shows off her pants at the "Bands For Beds" charity event; Kurt Russell and John Travolta are honored at the "Living Legends of Aviation" Awards; Joni Mitchell steps out for the opening reception of Alexander Yulish's art exhibition—clearly not everyone fled to Utah for Sundance this weekend, so check out the stars that stuck it out in L.A. in this edition of Last Night's Parties.

Kirsten Dunst, Elijah Wood and many other well-noted stars enjoy music by John Legend at The Art of Elysium's 6th Annual HEAVEN Gala; Anne Hathaway, Ben Affleck, George Clooney and Lena Dunham are among the many celebrated at the AFI Awards Reception; Amanda Seyfried, Sienna Miller, Hugh Jackman and a bevy of other notables sip tea at the BAFTA Tea Party; Keith Urban and Nicole Kidman honor the land down under with other famous Aussies at the 2013 G'Day USA Black Tie Gala; Leonardo DiCaprio, Bradley Cooper, Eddie Vedder, Julia Roberts and many more A-listers come together in support of the 2nd Annual Sean Penn And Friends Help Haiti Home Gala—get all of this and so much more in this jam-packed Golden Globes Weekend event roundup!

Sarah Hyland and ELLE Magazine host Songbirds' "Miss Me" album launch and party; Jack Black, Don Johnson and Christina Hendricks are among the stars schmoozing at the Hollywood Foreign Press Association's Annual Luncheon; the Los Angeles Food and Wine Festival kicks off with Giada De Laurentis, Mayor Antonio Villaraigosa, Wolfgang Puck and a slew of famous chefs; and Zachary Quinto and Adam Brody are in attendance as HollyShorts hosts their 8th Annual Film Fest--find out what you missed Thursday, in this installment of Last Night's Parties.

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Last night in NYC, Blake Lively and John Travolta step out for the 'Savages' premiere, Lifestyle Mirror and Ruinart Champagne toast summer with Anne Hathaway to celebrate the unveiling of the limited edition 'Miroir' collection, Dree Hemingway hangs out at the Jamboree event present by The Cools, Kilo Kish performs for the Lowline fundraiser at the Bowery Hotel, and so much more! Last night's parties were all about the outdoor festivities. More»

Blake Lively, Taylor Kitsch, Benicio Del Toro, Oliver Stone and Salma Hayek attend the premiere of their latest movie Savages; Greg Louganis hits up Herb Ritts' L.A. Style Short Documentary Premiere at the Getty Center– Monday night in L.A. was short on events but long on style, and all about movies. We have all the details on what went down in this installment of Last Night's Parties.

Benicio Del Toro, Salma Hayek, Oliver Stone at the "Savages" Premiere More»

Hollywood heavyweights of all ages including Jennifer Aniston, Jack Nicholson, Dakota Fanning, Meryl Streep and Julia Roberts step out to help honor Shirley MacLaine; Stephanie Pratt, Derek Hough and more single famous faces party with OK! Magazine at Roxbury; Jamie Chung, Taryn Manning and others hit E3 to support the fight against AIDS with a night of gaming; Vanessa Williams is honored at the Covenant House California's annual gala—it was yet another bustling Thursday across L.A. and we have the lowdown on who partied where in this installment of Last Night's Parties. More»

• Ernst Henning Eielsen, one of five judges in the trial of Anders Breivik, the man responsible for the horrifying mass murder of 77 in Norway last July, is caught by news cameras playing solitaire on his laptop for 16 minutes in court during the testimony of an expert witness. [ABC]
• Today is apparently National Best Friends Day so in honor of the holiday, here's a collection some famous BFFs throughout the course of history. [Buzzfeed] More»

• After going steady for nearly three years, 19-year-old pop star Miley Cyrus and Hunger Games actor Liam Hemsworth, 22, are engaged—as in getting married—and have actually been keeping mum on it for a whole week until going public with the engagement this morning. [E!]
• Breast cancer survivor Sheryl Crow reveals she has a benign brain tumor which she discovered upon getting tested out of concern for her severe memory loss including one instance wherein she forgot the lyrics to "Soak Up The Sun." [HuffPo] More»