This just might be the ultimate party dress: The pleated crossover bodice creates the look of a wasp waist (no need to resist that tray of hors d’oeuvres!), while the knee-length crinoline-layered bottom half will inspire you to twist the night away.To buy:
ML Monique Lhuillier polyester-taffeta dress, $209, neimanmarcus.com
. Badgley Mischka earrings. Ben-Amun necklace. Lagos bracelet.