You can't wear a corset from the 1900's without some assistance from a bust pad to create the mono-bosom much loved at the time. As a prelude to my next design (from 1906) I drafted a bust improver in four sizes;
It was a quick Sunday afternoon project. I bagged out both the cradle and cups, hiding the seam allowances within the two layers and stuffing the cups with hollow-fill stuffing. Patreon patrons received this as a bonus extra pattern and it is also available in my Etsy store.