You should look on Ebay. They have lots of wrap dresses by decent brands like BCBG. I also want a DVF but I'm really particular on the print. I want something green (I think) and preferable one of her vintage styles because I like the fit better.
I got this BCBG one off ebay and it's really cute. I also got a really cute one at Off Fifth in a bright pink paisley (which is actually cuter than the DVF prints, imo) but sorry no picture.