Oh Laura, it's horrible when that sort of thing happens.
If it's any consolation, I had a 1950's jaguar and a fairly large skirt on my dress and although it had to be folded a bit, my dress fitted in fine and didn't look the least bit creased when I arrived at the church/reception.
Don't worry - it's going to be fine
__________________
Saturday 16th June 2001 - St Catherine's Church, 
Some people are like slinkies, not really good for anything, but they bring a smile to your face when pushed down the stairs