by POPSUGAR Celebrity 2

The Oscars preparties are already getting underway, and some stars were dressed up to get in the spirit at last night's Artists for Peace and Justice event hosted by Vanity Fair in Beverly Hills. Jon Hamm and Jennifer Westfeldt posed with Gerard Butler inside away from the rainy evening in LA. Olivia Wilde and trippy movie all star Ben Stiller also smiled together for the cameras. Kristen Bell matched two fellow attendees — Westfeldt in award season-ready red and AnnaLynne with a one-shoulder dress. McCord was spotted out on a romantic date with Kellan Lutz on Tuesday and she was quickly back to her busy red carpet schedule.

See more photos from the party if you just read more.

Images include: Ben Stiller, Diane Lane, Kristen Bell, Cuba Gooding Jr, Hayden Panettiere, Maria Bello, Gerard Butler, AnnaLynne McCord, Jon Hamm, Jennifer Westfeldt, Nia Vardalos, Lee Daniels, Dule Hill, Paul Haggis