From left: Strapless crepe-backed satin and silk tulle, Kenneth Pool for Amsale, $7,200; 800-768-0170. Cowl-neck tulle with sequins, Elizabeth Fillmore, $6,380; at Bergdorf Goodman, 212-872-8957. Beaded Chantilly lace with pleated tulle skirt, Peter Langer, $10,450; at Ultimate Bride, 312-337-6300.