EXCLUSIVE! Preview Theory's New SiteCourtesy of Theory

InStyle.com’s exclusive 2-day preview of Theory’s new e-commerce site is here! Be first to shop the spring collection, edited by some of fashion’s top stylists like Isabel Dupre, Kate Young and Tina Chai and watch behind-the-scenes videos of them at work. To preview the site, log in with username: storefront and password: be1. The first 200 customers who spend $350 or more will receive an exclusive Fashion Insider T-shirt (right) by entering promo code INSIDER at checkout.