Didier Ludot is one of the world's most famous vintage clothing dealers and an incredibly charming man to boot. His clientele ranges from model Stephanie Seymour to fashion designer Azzedine Alaïa. Check out the French couture from the '20s to the '70s on the racks: wonderful old Chanel suits, Balenciaga dresses, and Hermès scarves. He has three boutiques: No. 20 houses his amazing collection of vintage couture, No. 24 his collection of ready-to-wear, and across the way at No. 125 you'll find his collection of vintage black dresses and his coffee-table book aptly titled The Little Black Dress. Métro: Palais-Royal. Other locations: 24 Galerie Montpensier, 1, Louvre/Tuileries, Paris, France. 125 galérie de Valois, 1, Louvre/Tuileries, Paris, France.