Command attention (your groom’s and your guests’) in a diamond-white silk-charmeuse bias-cut gown with diamond-ribbon straps, $3,290, by Amy Michelson. CZ bracelet, $80, by Hera’s Gem, 925-256-1488. Swarovksi crystal bracelet (seen throughout), $150, by Isaac Manevitz for Ben-Amun, 212-944-6480. On him: Black suit, price upon request; white embroidered shirt, $370, both by Prada, 888-977-1900. Black tie, $100, by Thomas Pink, 212-838-1928.