Women’s vintage prom gown

This is a beautiful red prom gown. The dress doesn’t have a label or size tag but I had my little girl try it on and I would put the dress size to be around a 9 in women’s. The only flaw I found was the tiny latch in the back is missing but the zipper is intact. The dress is in great condition. I didn’t not find any stains or rips or tears.