You heard me right. Im getting married in a month, and I want to carry.

It wont be in a church, and i wont be drinking, so it will be all legal.
My only concern is carrying in a dress.
I have a smartcarry holster, which may or may not work (i dont have the dress here so i cant try it out). im thinking it wont because the dress is kinda tight in that area. I am thinking some kind of thigh holster.
Here is the one i found:
BDFADC Galco Thigh Band Holster FREE S&H, 20% OFF
Anyone seen any better ones?
I want something comfortable and need to be able to dance around in it and such.
I will be carrying my kimber ultra aegis (1911 defender sized)
I am not 100% familiar with all the size options offered on that website, which one, if any, would fit that gun?
Any other comments or suggestions?