I'm looking for fashionable but inexpensive burlesque style lingerie, corsets in particular. I wear a 38D bra size, and a size 12 dress.

Also, I'm trying to find cheap used formal dresses, size 12, maybe a little bigger. Wedding gowns, prom style dresses, cocktail outfits, etc.

Any advice on where to look for this type of thing would be helpful.

Try a thrift store for the dresses

I have several dresses in your size. I will send pics to email of you are still looking.
Kari