Chantelle black satin bra, $76. Alexander McQueen black-and-gold jacquard wide-leg trousers, $1,365. Natori black silk robe, $117. (In background: Wacoal tan- and black-lace bra, $52; Sassybax panties, $52.) Saks Fifth Avenue. Yves Saint Laurent black patent platform pumps. Barneys New York.