Unless you happen to frequent red carpets, there's rarely a need to break out a designer gown. Since formal occasions don't come that often, it can be a waste to spend a ton of money on one frock. Rent the Runway provides a solution, letting you rent pricey outfits and accessories for 90% off the retail rate. The company sends you the dress in two sizes, to be sure it will fit, and you keep the outfit for four or eight days. Once you're done with the dress, you mail it back in the envelope that is provided and Rent the Runway even does the dry cleaning. The site can help you be that girl who never wears the same dress twice.