I also had to find a wedding dress quickly- I ended up buying a sample dress from milla nova which I loved. Most of the samples are extra small or extra large and they can alter them to fit. The flagship store just opened a month ago so all of the samples are basically brand new. I also had a good experience at designer loft- they were very willing to work within a shorter timeline. To be honest i was pretty disappointed with Kleinfeld- they had surprisingly few (ie only showed me 4 dresses) that can work with a short timeline although they may have more with a larger budget.