Vintage Lilli Diamond Evening Gown, Off White Ruffled Strapless Prom Dress

Vintage Lilli Diamond Evening Gown, Off White Ruffled Strapless Prom Dress. Off white Strapless gown from late 70’s or early 80’s. I’m not certain on the size. Waist measures 13.5 seam to seam. It is in good vintage condition. Please review photos carefully. I tried to capture any stains or pulls. They aren’t noticeable. It has been stored but was dry cleaned prior. I am guessing around a 6-8. Worn once.