Ralph Lauren

After a stint as a Brooks Brothers tie salesman, Ralph Lauren, 69, started his powerhouse brand 42 years ago with a collection of ties. Today there are over 35 boutiques in the United States. The company offers three collections: Polo is the fast-fashion-fix line for the young metropolitan male; Black Label is a more upscale, edgier version of city dressing; and Purple Label is the ultimate deluxe line. The designer has a personal fortune of $4.2 billion.