Here is a beautiful Lady Lynne full slip that was sold at Lord & Taylor. The fabric content is 45% Nylon, 35% Rayon and 20% Dacron Polyester. It has white lace accents around the top and bottom. On the bust are tiny pastel embroidered flowers. The straps are adjustable. There are no holes are snags and the lace is perfect. There are some light yellow stains on the front and another little dark mark under the bust. I have not tried washing it. I would say that it is a size M or L. The measurements are Armpit to armpit 36", Waist 34" and Length from front V 30.50".
Vintage Lady Lynne White Full Slip With Embroidery