I bought 2 sizes and the other one is my correct size so I never even took this out of the package (still in the PUG plastic and tags all on).  Size Medium/28, for waist 28, hip 38. 

Flexible boning gives back support, contour bands shape your waist, hips, back, and bottom, and it opens with a convenient hook and eye front. Includes four detachable metal garters to keep your stockings perfectly in place.

Looks like this size is now sold out on the website.  $46 shipped in the US, add $5 int'l.  Thanks!