Above: the NYC apartment of Calvin Klein creative director Francisco Costa. Note the very Calvin Klein-y neutrals. His is among the homes featured in Assouline's just-released American Fashion Designers at Home, a weighty tome that explores the homes CFDA members. Browse more of Costa's apartment and peek inside the drastically different dwellings of fashion folk Betsey Johnson (pink, of course), Ralph Lauren (balls-out Americana, natch), and Randolph Duke (Hollywood glam, duh) after the jump.