"Accessibility" was the order of the day at Derek Lam's launch party to celebrate his five-piece capsule collection for eBay. The collaboration is a taste of what's to come in Derek's own diffusion line due out next resort season (which he promises will be a more accessible price point at the same elevated style).Lam was on hand to discuss with his lovely co-host Rachel Bilson. We stopped to chat with the affable Bilson and learned we share the same style icon -- Janis Joplin -- and an obedience to Mr. Lagerfeld. "Anything Karl asks you to do, you do." she told us. Took the words right out of my mouth, Ms. Bilson.