Adam Lippes is part of that long line of American fashion designers who live as stylishly as any of their clients, a tradition that includes Oscar de la Renta, Bill Blass, and, of course, Ralph Lauren. Lippes has transformed numerous homes, and many have ended up in the pages of AD. But fashion changes, and so do fashion designers. “I thought I would always live downtown,” Lippes says. Alexander Farnsworth (left) and Adam Lippes