Turn it into a costume for Halloween or for a fancy dress party. My article gives ideas like the one below to get you started.
Make a Zombie Bride Costume from a Wedding Gown or Prom Dress
Check for an inexpensive or shabby wedding gown at Goodwill to repurpose for this costume, as you probably won’t want to distress your own wedding gown for it. Get some make-up and gory looking accessories (like the detached arm of the groom).