I already found a dress and put a payment down, but I fig this would be good event to share. The charity is called brides against breast cancer and they have a "tour of gowns." They sell Wedding dresses and profits go towards breast cancer awareness, research and such. You can also donate your wedding dress. It is coming to Philadadelphia the end of March, here is a link to their site.
http://www.bridesagainstbreastcancer.org/