Part of the 'Wanderlust' collection, Zimmermann's dress will have you dreaming of balmy vacation evenings. Made from silk-poplin, it has a plunging neckline and is artfully cutout at the sides. It's shirred through the back and falls to a floaty skirt. Lower-Impact Materials. This product is made using at least 50% lower-impact materials or ingredients. Find out more about our NET SUSTAIN criteria here.