Don't be afraid to try the medium CW-X. My Large seemed to have strap-growth issues as I shrank, and then wads of fabric started showing up under my boobage, and there was some definite sagging going on.

The medium is a struggle to put on, but is fab-u-lous once all the contortions and swearing are over.

I am tall and long-torsoed, so your results may vary.