First and foremost, go for sports bras or bras without underwire.
Sports bras tend to push down the girls; so even though the corset exaggerates them, the sports bra will tame them a bit.
Preferably a sports bra for high impact.
These tend to be stronger in material and push the girlies down with a firmer force.
Then over the corset, wear a loose fitted or baggy top.
If you can’t do that, and you need to wear something more fitting, say for work, loosen the corset near the underbust area.
This will lessen that ‘pushed up’ look a bit more.
I know I know, but the gromments!!!
Parrrraaallllel!!!
If you can’t stand the V-style gromments, then loosen the entire corset.
It’s OK.
It’s not going to be the end of the world.
Once you’re home, tighten your underbust area back up.
Also, what you could do, is get a corset with a larger rib spring.
A corset with a larger rib spring may help to prevent the “pushed up” look even more.
Lastly, get a shawl or scarf, or something, and wrap it around your neck and chest.
And wrap it in the back too, not just in the front.
Don’t tuck it in, just let it hang.
It’ll help to “even out” the exaggeration, and when looking at you, the eye may tend to pull downwards rather than straight at ( ) ( ) THEM.
I hope this helps!