This green Helmut Lang satin maxi-dress is cut from lightweight satin and features a maxi-length hem, contrast shoulder straps, slim-fit silhouette, low-cut rear, v-neckline and rear centre split.  This piece is classed as an essential item, as Carine Roitfeld once said, 'I discovered the slip dress, which I think is one of the more French things, because when you take off your clothes, even to go into the shop to buy something… it's like having protection.'