Longtime Cali surfwear label OP is back with a hot new summer line and lots of familiar star faces, including 'High School Musical''s CORBIN BLEU, "Laguna Beach"'s KRISTIN CAVALLARI, model JOSIE MARAN, singer CHRISTINA MILIAN, RUMER WILLIS, newlywed PETE WENTZ and WILMER VALDERRAMA.

The gang showed up at a Hollywood party for the launch of their new ad campaign and filled us in on what they look for in summer beach-wear!

OP, available at Wal-Mart, includes bikinis, camisoles, tube tops, board shorts, tanks, hoodies and Tees, including a purple jersey raglan top worn by Kristin that retails for only 97 cents! (Seriously!) To see the campaign and clothes, visit www.op.com.