Didn't have a wedding dress as such, just a v pretty long dress. Won't have fitted me for decades - I was only about a size 8 at the time. It's still up in the loft in a suitcase somewhere, along with dh's wedding suit, IIRC.
Also up there is the dress I made for the occasion, but was really put off when my mother said it looked like an old fashioned nightie!! (To be fair although v pretty it wasn't as flattering as the one I eventually bought,)
However it had its moment of glory a couple of years later, when I was living in Oman. Someone I knew was invited to a very formal do with HRH the Sultan, and had nothing to wear sufficiently covered up. So she borrowed mine - had to stitch the lace round the yoke first, though, since I'd never got around to that.
I did however wear it maybe once when pregnant!