Drink in this red silk charmeuse one-shoulder goddess gown with detachable tails, $4,987, by Romona Keveza Collection. Crystal pin, $1,200, from Carole Tanenbaum Vintage Collection. Garnet bracelets, $500–$675 each; gold and garnet bracelet, $2,800, all from Melody Rodgers. Gold and pink tourmaline ring, $3,600, by Christopher Phelan Fine Jewelry. Black tail coat, $1,400; black vest, $350, both Black Fleece by Brooks Brothers, 800-274-1815. Bow tie, $115, by Ermenegildo Zegna. Shirt, $180, by Thomas Pink, 212-838-1928.