You may do what I did and order a few sizes bigger.  If you are into traditional corseting and like to buy your corsets 4" smaller than your actual size, then go ahead and order what your actual size IS! Some women out there complain that the corset was NOT the size that it was listed as.  But what these women are forgetting or just don't know, is it is actually the correct size because corsets are to be worn typically 4" smaller than your actual waist line.  So just be sure to order correctly.  If you are like me, and don't like to be tied that tight, you should go a a size or two, and adjust the backing to fit.  Hope that helps you vixens out there!