You’ve seen the “beer belly”: a man with a belt that’s too tight, and too low, so the belly hangs over the belt. It is a distinctive shape, whether it came from beer or from chips and sodas.

In a similarly-overweight woman, if there is a line it bisects the stomach; the curvature of the distended stomach blends with the distended belly below the waist. Women may corset, but they do not support their distended stomach with a belt the way men do.

Many of us are overweight. You can look like an overweight man, or you can look like an overweight woman. The most healthy solution is to lose the weight — but I know that’s hard.
Until you do lose the weight, buy a corset if you want, but don’t try to pull in your waist with a belt; it will slip down, so you look like the upper photo.