His singular take on 20th-century American classics—from flapper-style (big flowers, unstructured lines, drop waists, flounces) to 1960s prom (empire waists, copious tulle) with a bit of motorcycle chic thrown in—has made Marc Jacobs the darling of American style. Metallics appear in most every collection, as do breezy, feminine fabrics, and lots of layers. Ready-to-wear is at Palais-Royal. The secondary line, Marc by Marc Jacobs, is sold in his eponymous store at 19 place du Marché St-Honoré. Menswear and accessories are at both.