oh, it isn't?? hmm! well, it looked more shiny than the dresses I remembered from those days... So, I thought, maybe ...vinyl? The fabric (especially around the pleating didn't look softened, so I thought maybe a modern material was used instead. ...then again my memory isn't what it used to be so maybe I don't know anything what I am talking about! heh
You look great in it either way and it gives the look I believe was intended so Kudos!!