Shop Banana Republic's Silk Cowl-Neck Backless Maxi Dress: The dress we’ll be wearing to every party, this bias-cut silk charmeuse sheath is all about the details: a cowl neck, flattering ruched bodice, open back, and wide crossover straps. In place of a zipper, our designer added a delicate drawstring detail for a custom fit, allowing you to create a cinched or more relaxed silhouette., Fitted: A sheath silhouette with a slim fit that sits close to the body., Cowl neck and cross-back…