Last night marked the star studded launch party for Ocean Pacific’s (Op) new Summer of Music campaign. Op is a fun, classic California skating and surfing brand and their line debuted with the hottest “back to campus” clothes. The campaign is title “OPen campus” and features some of the hottest celebs: 90210’s AnnaLynne McCord, One Tree Hill’s Sophia Bush, Solange Knowles, Good Charlotte’s Joel Madden, The Hills Brody Jenner, and Disney Star Cody Linley.

The campaign, which will hit fashion and entertainment magazines this fall, shows the stars hanging out on a custom made Op bus. The vintage, solar powered bus was created by TLC’s West Coast Customs and features skateboards and surfboards and other great Op products. The bus will be featured on the TLC show this summer.

The launch party was held at Mel’s Diner in West Hollywood where the campaign’s stars walked the red carpet to support the brand. There to join in the fun: a slew of other big name stars like Nicky Hilton, The Hills Lo Bosworth, and Twilight’s adorable Kellan Lutz. Fashion was everywhere; AnnaLynne McCord came dressed in dark, tight jeans and a racer-back tank and teased the press by blowing kisses, while Brody Jenner posed with his girlfriend Jayde Nicole who looked sweet and effortless in a strapless yellow dress. Sophia Bush posed with friends and rocked this season’s structured short-shorts and strappy sandals. When the entire Op clan posed together, it was easy to tell why they were chosen to represent the brand: while each star’s style is unique, they all have laid back and fun personalities which exemplify Op.

The Op collection can be found at Walmart stores all over the country, or you can go online to purchase the exact styles the stars wore in the campaign. Check out: www.walmart.com/op to find a great array of choices. If you want to know more about the campaign’s stars or want to check out the Op blog visit www.op.com.

Photos: Bauer/Griffin