Vintage Navy Blue Satin and Lace Nightgown Slip

I bought this at least 10 years ago at Karen Elson's vintage store in Nashville. It's a beautiful piece in fantastic condition. No obvious flaws that I can see. It's much too small for me now, so passing along. I was probably a 6-8 and 36b-c when I bought it, so I'm guessing it will best fit a size Medium.