Vintage 1955 Leslie Fay original Audrey Hepburn classic cocktail dress S

Gorgeous vintage dress, in great condition. Purchased at an upscale vintage shop and I’ve never worn it. I would say it’s a size 2-4. Please look at measurements. There are some flaws in the fabric, see pictures, both are on back of dress and not noticeable when wearing. Not sure if it’s silk or satin. Classic cocktail dress! It’s a beauty! Back zipper with hook at top and in middle. 2 small bows on the back and pleats. There’s also a hook on inside of dress on the zipper. Dog friendly home