[Sophia Bush, Brody Jenner, AnnaLynne McCord, Bow Wow, Solange Knowles. All Photo by ANDREAS BRANCH for PMc] The celebs came out to Mel's Diner in West Hollywood, CA on July 7th for OP's new fall 2009 clothing launch campaign party. OP's new campaign is called "OPen Campus" and will be selling college inspired clothing available exclusively at Wal-Mart. Some of the faces of the new line include Brody Jenner, Solange Knowles, Cody Linley, Joel Madden, Sophia Bush, and AnnaLynne McCord. Rumored to be McCord's boyfriend, Twilight star Kellan Lutz attended the event along with a full medley of LA's celebrities. More photos below:

Kayla Ewell, DeAnna Pappas

Kellan Lutz & Family

Casey Reinhardt, Anna LynneMcCord

Heather Tom, Dana Wortman

Italia Ricci, Jonathan Bennett

Jayde Nicole, Brody Jenner, Kim Kardashian, Lo Bosworth, Khloe Kardashian

Jodie Sweetin, Lady Victoria Hervey

Sophia Bush, Brody Jenner, AnnaLynne McCord, Joel Madden