LNA, the California-based brand favored by celebrities like Rachel Bilson and Nicole Richie, has teamed up with PacSun on an interesting new initiative, the Trade Collective. How does it work? The idea behind the Trade Collective is simple: PacSun wants to showcase emerging brands in its stores by creating exclusive, limited edition collections with the brands. Accordingly, beginning October 31, a special LNA collection will be available at PacSun stores, as well as online at PacSun.com. The collection features LNA’s first ever graphic tees, along with a series of the brand’s signature zipper leggings, all of which stay true to LNA’s cool-yet-casual vibe. Prices start at $28.50.