Ralph Lauren Black Label Navy Double Breasted Trench Dress, Side Pockets! Size 4 This Ralph Lauren dress embodies a mesmerizing silhouette and a classy appeal. Tailored from cotton, it is designed in a double-breasted style and features a belt detailing at the waist, short puffed sleeves, and a fine collar. Measurements Approx armpit to armpit 17 in. length 39 in.