That's pretty much what I figured. You can't replace a corset all that easily or inexpensively, but the chemise can be shredded for rags.

I got a strapless camisole....which should do the job ;o)

It was Simplicity that I noted had the most authentic looking stuff. The Re-enactors blow my mind--it's hard for me to imagine wanting to do that kind of thing....but then again, I fence.....so I shouldn't roll my eyes over other people's weird hobbies....