Seeking Elie Saab Wedding Dress, Caelum

Hello, I am seeking to either rent or purchase second hand an Elie Saab Wedding dress, and the specific one I want is called Caelum. It is my dream dress, but I can`t afford to buy a new one. I do not need it until the fall of 2011, so if you have one that you`d like to sell or rent to me, I would greatly appreciate hearing from you! As an aside, my standard (regular) dress size is a 4; I am 5`7 and 126 pounds. Thank you.