Very unusual vintage mini dress by Marc Jacobs.
Silky fabric with a nautical theme in pale pink, with black collar and stripes.
Size medium but I would say it best fits a size 8, and is quite short so maybe could be worn as a top also.
Zip fastening on reverse of garment with trademark star feature.
In beautiful vintage condition - I bought this several years ago from a stylist, and have never worn it myself.   It has been sat in storage for some time, so I would suggest a dry clean, though there are no visible signs of wear.