Men: Black tuxedo, white shirt, black bow tie, black socks and shoes. (No black jeans!)
Women: Floor-length black dress or slacks, long-sleeved black top, black shoes, black stockings (backless gowns, mini-skirts or tights are absolutely unacceptable).
Men and Women: Tasteful jewelry to complement the outfit a plus! Noisy and excessive jewelry is discouraged. Subtle cologne/perfume, preferably none!