Vintage 70's dress Wine Plum Purple pleats ruffle

Vintage 70's beauty! Photos don't do it justice. I saved this from an estate sale, but sadly it is too large on me. No size or material information is remaining. It is *not* small though, I would say either a very curvey medium or a large [I'm an average medium w/ 34B bust and it absolutely swallowed me]. Pretty safe bet it's 100% polyester. Photographs far more sheer than it looks in person, but that's good to know. Ha! Let me know if you have any questions! The jacket was handmade and included