Rock Star Divas do it all the time so why can't you! It is after all the most important day of your life!
Have your guests doing a double take by presenting yourself in a princess ball gown for the ceremony with a sleek up do and beautiful natural makeup. Then switch it up for the reception! Be introduced to your guests for the first time in public as "Mr. and Mrs." in something a bit sexier and more comfortable. Let your hair down and darken up the makeup a bit. It's your day, have fun and be beautiful!
The groom can join in as well by changing into a beautifully tailored shirt and tie to match the theme. Maybe toss on a pair of hip shoes and tassel the hair a bit.