Advice:
Bring a safety pin or needle and thread with you the WHOLE wedding day!
Why do I mention this? This is the second time I have had to help a bride pin the top of her dress right before the ceremony! Those little hooks at the top of the zipper are not very well sewn in, and when a dress is tight, they just pop right off! Crisis was averted, but it happened just before my friend walked down the aisle, and we had to go around asking for a safety pin (which the limo driver luckily had one).