Derek Lam 10 Crosby's 'Andie' dress is made from crisp cotton-poplin that's gathered along the hem and sleeves for volume. It has utility-inspired chest pockets and an adjustable drawstring waistband to temper the loose silhouette. Wear yours with lace-up sandals and a tote. - Light-blue cotton-poplin - Slips on - 100% cotton - Dry clean