1516 Wisconsin Ave NW
This upscale second-floor consignment shop has been around for 30 years, specializing in designer merchandise. Creations by Chanel, Armani, Donna Karan, Calvin Klein, Yves Saint-Laurent, Ungaro, Ralph Lauren, and others are sold at about a third of the original price. A stunning Scaasi black-velvet and yellow-satin ball gown might go for $400 (from $1,200 new); Yves Saint-Laurent pumps in perfect condition can be had for as little as $45. Everything is in style, in season, and in excellent condition. Secondhand Rose is also a great place to shop for gorgeous furs, designer shoes and bags, and costume jewelry.