I wear a L and this is a L, it’s true to size. I am 5’4” and 180 lbs. It is fitted with stretch material. No slip needed. The material is of different color on reverse side. The touch and feel is luxurious. I was so excited and happy when I first laid eyes on this dress. It’s everything I wanted and expected. It it as pictured. The length is great. The back n long zippered. The arms are belled with great fit and slight stretch. But not too tight nor loose. The material is nylon with stretch…