Lovely vintage wedding/prom dress!

I’d guess this beauty is perhaps from the 1960’s. Such a classic, flattering design! Would be lovely as a wedding dress or for any other occasion that your heart desires. Zips up the back, but as you see my mannequin is too big to zip it up all the way. I’m thinking it’s probably an XS or S. Please see the photos as there are multiple stains on it. They may well come out, but I will be selling as is which is reflected in the price. Cheers for looking!