Rent from $27.50 for 2 days · Buy for $90 · Size 0 · Black and ivory floral · Cinq à Sept

Cinq à Sept's black and ivory floral one-shoulder maxi — a single sculpted strap, twist-through waist cutouts and a sheer, floor-grazing chiffon skirt. Save it for the night that calls for an entrance. Wear it to: weddings, black-tie events.