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A good idea, a lot of hard work, and the right attitude can go an incredibly long way, which is how online vintage retailer Nasty Gal went from a one-person eBay venture to an insanely fast-growing international business with hundreds of thousands of customers in just six years. Nasty Gal founder Sophia Amoruso celebrated the site's recent redesign, launch of the Nasty Gal blog, and general success with a Sky Ferreira-hosted, Breakbot DJ'ed blowout at the Roosevelt's Tropicana Bar last night.