Early 19th Century writings..

…of the English and French, however discuss that stays were worn or not worn in equal measure.  Young women and those with beautiful figures discarded undergarments, while those of “bountiful flesh” or older and gravity drawn shapes continued to wear some sort of understructure. (Portraits Featured and below: Many older …

In the early 1800’s…

…as society was rapidly growing more urbanized, the demand for mass production demanded “proportionate” systems to speed up the trial and error of previous methods.  The fitted garment became the norm. (Caroline Murat, Napoleon Bonaparte’s little sister in 1808 had perfectly fitting garments)