Guess? wants you to get into its pants. Founded by Georges Marciano and now run by his brothers, Guess ? was a designer jeans company, that now designs and markets trendy, upscale apparel, shoes, handbags and accessories for men, women, and children. Its trademark sexy ads, which have featured supermodel Claudia Schiffer and actress Drew Barrymore, are also designed in-house. Located at 537 Broadway in New York City.