There this store that used to sell soft corsets "charolette russe" for the longest time it was the only store in town that sold even anything close to an actual corset (aside from of course the local goth in a box, or hot topic if you like. I won't even step foot in there. The clothing quality is sub par at best) I admit corsets aren't practical but I still absolutely adore them.
If the fabric is stretchy you can get away with a soft corset.
Alternately, have you considered a vest. Something tailored and flattering. Maybe something that sits below your bust line. I made that vest a while ago. It's pretty tailored though, I don't know who confident you are with that. Mine isn't that high, but I got lucky (very) winging it. It's a halter top wrap around thing, there's more pictures in the project, You could use satin for the back of it like how they do on normal vests. The one I made isn't stretchy at all. I was just thinking that you could use it for that and pair it with virtually anything. Dress it up or down, that way you'll be able to wear it whenever, it is some really gorgeous fabric. You can always do some paneling with a vest as well. Maybe even go for more of a waistcoat (come to think of it I'm not quite sure if there's a difference between those and a vest....is there?) You could totally add in a pocket, or even a false pocket and add a silver chain to highlight the fabric. And just rock it. You could even use some of the scraps and add them onto some spats or something. Maybe some fabric wrapped buttons even. Geez I don't even know what your style is like but I totally got sidetrack inspired there....believe me it was way worse in thought process form, ha ha.