I have a Maureen Myring Kesterton - 'Moonshell' lace bodice and skirt (looks like a one-piece). It gives you a tiny waist but is more of a princess style skirt so might not be what you are after...
Anyway, search 'MMK Moonshell' and see what you think. It is professionally dry cleaned and I am 5'7", size 10.
Price-wise I am after just a few hundred pounds for it - I would love to keep it but am expecting a baby so we need the storage space.