This doesn't apply to you, because everything will be perfect on your day.
But just in case, someone may want to throw a survival kit together:
For That Gorgeous Dress:Safety pins
Needle and thread (ivory and black)
Hook-and-eyes
Lint brush
Baby wipes, baby powder and cotton balls (Got some makeup on your dress? If your dress is white/diamond white/ivory - Shake some baby powder on top, press it into the fabric with the cotton ball, then wipe it clean with a baby wipe!)
Clear nail polish (will stop a run in tulle - on your dress or veil!)
For the Gorgeous Bride:Kleenex
Aspirin/Tylenol
Alka-Seltzer
Granola Bar (don't forget to eat a little something!)
Bobby Pins
Deodorant
Breath Mints
Toothbrush/Toothpaste
Hairbrush/Hairspray
Your favorite lipstick (Having your favorite lipstick can solve the worst of problems, can't it?)
and if all else failsTiny bottle of Vodka (just in case!)