(FORTUNE Magazine) – In Amsterdam, Miami, and soon New York, jet setters are eating in bed--crumbs and all. At Supper Club, hidden in an Amsterdam alley, patrons lucky enough to get a reservation kick off their shoes and unwind on 45-foot-long mattresses, enjoying a five-course meal that could be Indonesian one night, Italian the next. "Our only goal is to make people comfortable in every sense," says artistic manager Harrie Wildeman between kisses from an admirer. During a recent dinner that Razorfish held for 30 global executives, founders Jeff Dachis and Craig Kanarick held court sprawled amid pillows and trays of champagne.

Meanwhile, in Miami, B.E.D. ("beverage.entertainment.dining") has been a hit with the South Beach crowd since it opened in December. A pajama patrol leads diners like Will Smith and George Clooney to gauze-draped "dining beds," where they enjoy desserts like Roll in the Sack. It'll be B.E.D.-time for Manhattan by the end of 2000, with Las Vegas to follow.

When it comes to eating on a giant white mattress, it's best to balance the plate on your lap or nibble while curled up on your side. Of course, some prefer to feed and be fed. As for what to wear, elegance and comfort are key (no short skirts, no stainable colors). As for what not to wear, Wildeman is clear: "No smelly socks, please!"

--Dorothy Childs