All of my corsets are bespoke, made to the measurements and aesthetic desires of the individuals who order them. That means the amount of reduction obtained with each corset depends upon the size, shape, and desires of the wearer, rather than an inherent trait of the design. On average, light-lacing is a roughly 10% reduction, although it can vary greatly from individual to individual depending upon their particular measurements and body type. On average, tight-lacing is a 20% – 30% reduction, but again it varies greatly from person to person depending upon their body, comfort level, and desires.

The proportions are fairly consistent between larger and smaller sizes, but comfortable shaping for larger sizes is quite a bit different than smaller sizes. With smaller sizes the greatest comfort concern is usually to avoid pinching or compressing bone. With very large sizes (usually size 18+) the greater comfort concern becomes the displacement of flesh, particularly in the belly area, where it is easily pushed into the lap and can cause other problems. That is why most of my plus-sized corsets have a curve over the belly. Giving extra room at the front helps prevent a roll from forming below the corset in front, preventing sitting and causing discomfort, and it also complements the accentuated curves of a larger figure.

I personally consider a slight plus size (typically 12-18 American) to be ideal for corset wearing because there is enough padding to easily avoid pinched bone, but usually not so much that it creates other problems and discomfort. If you look through old Victorian corset advertisements, most of the models look like they are in that range. So many of the tiny corsets survive to the modern day in perfect condition because they were never purchased or worn. The mid-range sizes sold out more frequently, just like with modern clothing.