An essential piece of clothing in a woman's closet, the little black dress has maintained its popularity through all trends because it is always the ''right'' thing to wear. It is a timeless classic, and all great designers have created their own variation. Didier Ludot owns the most famous vintage clothing store in Paris, the fashion capital of the world. The store, La Petite Robe Noire, is housed in the prestigious Palais Royal, just steps away from the Louvre. Ludot has meticulously built and maintained a collection of black dresses -- which features designs by Chanel, Balmain, Balenciaga, and Gaultier, among others. Photographs of these dresses are juxtaposed with archive photos of Romy Schneider, Catherine Deneuve, Jeanne Moreau, Sofia Loren, Edith Piaf, Paloma Picasso, Marilyn Monroe, and Elizabeth Taylor -- all in their black dress finest. Ludot's collection is a delightful tour of the black dress from yesterday to today.