The best way to hide your corset is with loose fitting clothes.
In cold weather it might not be a great issue because we’re all wearing coats and layers.
But during the summer time, it can be a bit difficult to stealth your corset.
So it does take some trial & error.
What works for me is a baggy shirt or light cardigan that you can throw over the corset to hide it.
You can try to layer with tank tops, too.
I also prefer high waisted bottoms; shorts, skirts, pants.
The high waist helps hide the bottom part of the corset more so than low-rise or “regular” rise.