The incredibly charming Didier Ludot inspired a fervent craze for vintage couture, and riffling through his racks of French-made pieces from the '20s to the '80s can yield wonderful Chanel suits, Balenciaga dresses, and Hermès scarves. Ludot has two boutiques in Galerie Montpensier: No. 20 houses his amazing vintage couture collection, while No. 24 has vintage ready-to-wear and accessories. Across the gardens, at No. 125 Galerie de Valois, La Petite Robe Noire sells his own vintage-inspired black dresses as well as his coffee-table book—which is aptly titled The Little Black Dress.