This elegant black cocktail dress from the autograph range at marks and spencer is new without tags the top of the dress is black lace with demure round neck and long sleeves underneath this is the plain black dress which has adjustable shoestring straps the lace is fixed at the waist and fastens at the back of the neck with a button leaving part of the back bare the dress is straight and plain from the waist there is a vent at the back of the hem and a back zip fastening the dress is li