The Design 100

With the redesign of the historic Yves Saint Laurent boutique on the Place Saint-Sulpice, the house kicks off a new look for its global network of 62 stores. This address—which was the inspiration for Rive Gauche, Saint Laurent's first line of ready-to-wear—opened in 1979. Now, with a completely new design by YSL creative director Stefano Pilati, in conjunction with Paris-based architects Alain Moatti and Henri Riviére of Moatti et Riviére (who also designed Jean Paul Gaultier's headquarters), the store recaptures its original architecture, including historic limestone arches. Modern touches like concrete floors and industrial lighting give the space a lofty feel. Inspired by the original packaging of YSL's Opium fragrance, Pilati covered the walls in shiny red lacquer—a detail that is repeated on the shopping bags, shoe boxes and other packaging. —Kate Betts