Inside the 2015 Oscar After-Parties With Beyonce, Emma Stone, Ashton Kutcher and More

For some, the Oscars were a night that will never be forgotten. For others, it's already a blur.

After Sean Penn announced that Alejandro Gonzlez Inarritu's "Birdman" had won Best Picture at Sunday's 87th Academy Awards, the evening's winners, losers, presenters and attendees were able to let loose and celebrate the year in film.

Earlier in the night, Elton John hosted his annual viewing party to raise money for his AIDS foundation. While an understated Miley Cyrus flew solo (boyfriend Patrick Schwarzenegger was M.I.A.), other famous couples–including Heidi Klum and Vito Schnabel–packed on the PDA. Gordon Ramsay catered the star-studded soiree, and guests sipped cocktails and dined under a tent that occasionally sprang a leak due to the inclement California weather. Other attendees included Alec Baldwin, Chace Crawford, Nina Dobrev, Colton Haynes, Julianne Hough, Kelly Osbourne and Lisa Rinna.

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Celebrities including Best Original Song winner Common and Best Actor winner Eddie Redmayne piled into the Governor's Ball, the official after-party hosted by the Academy of Motion Picture Arts and Sciences. Host Neil Patrick Harris toasted a job well done with his husband, David Burtka, while Patricia Arquette, Faith Hill, Felicity Jones, Tim McGraw, Graham Moore, David Oyelowo, Miles Teller and Margot Robbie posed for pictures. Best Supporting Actress nominee Emma Stone also hugged Best Actress winner Julianne Moore.

Governor's Ball guests indulged in decadent desserts from Wolfgang Puck.

The Vanity Fair Oscar Party, held at Los Angeles' Wallis Annenberg Center for the Performing Arts, drew the biggest crowd. Beyoncé danced the night away with Solange Knowles and was seen sipping Champagne with Kevin Hart, Jay Z and Jennifer Lopez.

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Other stars who attended the Vanity fair Oscar party included Malin Akerman, Robbie Amell, Jennifer Aniston, Judd Apatow, Kristen Bell, Orlando Bloom, Lisa Bonet, Jessica Chastain, Jamie Chung, Lily Collins, Joan Collins, Mark Consuelos, Dane Cook, Marion Cotillard, Jai Courtney, Benedict Cumberbatch, Kat Dennings, Laura Dern, Vin Diesel, Taye Diggs, Minnie Driver, Robert Duvall, Ava DuVernay, Billy Eichner, Chiwetel Ejiofor, Ansel Elgort, America Ferrera, Selena Gomez, Ashley Greene, Melanie Griffith, Josh Groban, Gigi Hadid, Angie Harmon, Rosie Huntington-Whiteley, Josh Hutcherson, Joshua Jackson, Rashida Jones, Mindy Kaling, Michael Keaton, Miranda Kerr, Jaime King, Regina King, Keira Knightley, Diane Kruger, Karolina Kurkova, John Legend, Jared Leto, Adam Levine, Courtney Love, Andie MacDowell, Leslie Mann, Sienna Miller, Kylie Minogue, Michelle Monaghan, Chloe Grace Moretz, Lupita Nyong'o, Rita Ora, Robert Pattinson, Paula Patton, Aaron Paul, Natalie Portman, Kelly Preston, Behati Prinsloo, Kelly Ripa, Rene Russo, Zoe Saldana, Andy Samberg, Rodrigo Santoro, Dax Shepard, J.K. Simmons, Cody Simpson, Brittany Snow, Jason Statham, Channing Tatum, Chrissy Teigen, Justin Theroux, John Travolta, Naomi Watts, Oprah Winfrey, Anna Wintour and Reese Witherspoon.

Meanwhile, a source tells E! News that Will Arnett, Steve Martin and Sarah Silverman huddled in a corner, while Leto and Hart took selfies. Cyrus left the party with Hadid and Simpson.

"They all got in the same car," the source says.

The trio headed to the after-after-party.

PHOTOS: Red carpet couples at the Oscars

That's right--the parties went on all night long.

Madonna was M.I.A. for her annual bash, as she's busy promoting her tour in Europe. Despite her absence, the Material Girl still hosted the private event with Guy Oseary and Gucci.

The ultra-private event brought out even more celebrities, including Lily Allen, Bradley Cooper, Chris Evans, Leonardo DiCaprio, Diddy, Diplo, James Franco, Mick Jagger, Kate Hudson, Anthony Kiedis, Zoe Kravitz, Mila Kunis, Ashton Kutcher, Jennifer Meyer, Edward Norton, Chris Pine, Mark Ronson, Questlove, Russell Simmons, Gwen Stefani, Aaron Taylor-Johnson, Sam Taylor-Johnson, Marisa Tomei and Rachel Zoe, among others.

PHOTOS: Inside the 2015 Oscar parties

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