Rue La La is a favorite flash sale site, for cheap dresses they have a lot of brands you'd never in a million years pay full price for, and their stuff is actually sold at a significant discount, which is far from a sure thing for sample sale sites. Rue La La is a members-only shopping site that sells home furnishings, accessories, brand-name clothes and designer shoes for less, and they even offer travel packages at discount prices. While membership to Rue La La used to be by invitation only, now all you need to do is register at the site before you can start shopping their fabulous sales.