From left: Nylon-and-tulle wrap-top dress with beaded-satin belt, Max and Cleo, $188; at Macy's. Satin strapless dress with lace overlay and satin sash, BCBG, $360;
bcbg.com. Silk chiffon minidress with ruffled bubble hem, Rebecca Taylor, $343; 212-966-0406.