C.,
Check out Baubles and Beads on Memorial - they have AWESOME 2nd hand stuff, at WONDERFUL prices. I picked up a suit recently for $69 that I was looking at online for over $400 - and they have plus sized sections. I have a purple jacket/skirt that has beading on it - it's a size 18 though - and FITS like an 18. I'm kinda large in the bust area, so it's really snug there - but fits pretty good everywhere else. It's long - I'm 5'6"...
OH - I have a black chiffon dress - v-neck, pretty flowy, with a sheer over drape that goes with it. I'll see if I can't find a picture and send it.