Mark Seliger's Instagram Portraits from the 2015 Vanity Fair Oscar Party

Best actor Eddie Redmayne and best supporting actor J.K. Simmons were among the winners who stopped by, and they were joined by this party’s usual array of eclectic A-listers: Jennifer Aniston and Justin Theroux, Lady Gaga, Ansel Elgort, Oprah Winfrey, Rashida Jones and Natalie Portman, Judd Apatow and Leslie Mann (and Kate Upton!), Rita Ora, Jason Wu and Karlie Kloss, Steve Martin, Mindy Kaling, Conan O'Brien, Amy Adams, Chanel Iman, Christina Aguilera, Diane Kruger and Joshua Jackson, Emma Stone, Felicity Jones, Irina Shayk, Kerry Washington, Marion Cotillard, Rosie Huntington-Whiteley and Jason Statham, Sofia Vergara and more.