For an opera or a party

New, black John Zack cocktail dress - UK16, with a delicate stretchy transparent top, deeper at the back, small padding sewn in, zipper at the back, unlined, no slit, material - polyester, stretchy, transparent part slightly stretchier than the dense bottom. Length along the back seam 115 cm, width at shoulders ~42, bust at armpits ~47, waist seam ~45, hips ~52, sleeve width above elbow at armpits ~17-18. Bought from ASOS, but never got a chance to wear it.