On the tip about the $99 dresses at Atlas, my mom, sister (MOH) and I went up there today to check things out. The lady who helped us was nothing short of nice and helpful. I was able to find one of the $99 dresses that fit nearly perfectly. It will just need taken in a bit in the bust (that's a first!), sleeves removed to make it sleeveless and a bustle put in. I haven't been able to find any pics online of it and the pics I've taken don't do it any sort of justice, but here are a few pics I took of it (not of me in it) and then one that I found that's similar.
Actual:
ETA: I did a little searching (took a lot of time) and found the original.
http://www.bonny.com/1712.html
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BFP #1 12/13/08 - mc 12/26/08
BFP #2 12/2/09 - emergency surgery for ectopic 12/5/09