Ivory silk charmeuse strapless sheath with boned corset bodice, $2,600, by Mariana Hardwick, 212-380-1443. Black organza coat with lace trim, $2,700, by Escada Couture. Jet-bead earrings, $150, from Stardust Antiques, NYC, 212-677-2590. Lace and crystal heart choker, $534; cuff, $297; ring, $71, all by Satellite Paris. 14K white-gold and diamond engagement ring, $5,000, by Catherine Angiel, 212-924-4314.