At least you will get some more use out of the suit, and every time you wear it it will (fingers crossed) bring up good memories. I had the full works, white (well, cream) dress, hooped skirt, veil, flowers in my hair... And now that dress is tucked away in a cupboard somewhere, albeit not gathering dust, since it is well bagged, but it feels weird to have bought something to only wear once.
Please don't friends-lock your write-up of the wedding, I'd love to read how it went.