there are a few nice girls that post on bp but I think they're mostly in the high 20s (read actually 30+) and more towards what I would consider mild on your curvy scale.
I saw there's a girl on the class choice website that looks very nice and has what seem to be some amazing curves. I have no experience with her though.
pm me if you want to talk about anyone specific that I might have seen. or maybe others will chime in.