OP's Party People

By:OK! Staff

July 8 2009, Published 10:33 a.m. ET

The stars of OP's newest ad campaign AnnaLynne McCord, Sophia Bush, Brody Jenner, Joel Madden and Bow Wow partied the night away with Kellan Lutz, Kim Kardashian, Stephanie Pratt, and Jodie Sweetin at the Open Campus launch at Mel's Diner in West Hollywood on July 7.

Check out the gallery for 20 more pictures from the party!