I've needed a new set of early Regency stays for a while. I have 1820s or so stays that I love, but my early stays stretched beyond wearability.
I have a detailed post about making these stays here. The short version--they're based on stays in the V&A and use the 1790 Linen Stays pattern from Corset by Jill Salen as a base. They're cotton broadcloth lined with cotton twill.
These stays are extremely comfortable--even if I did manage to tie the straps at different lengths and the center front bow came untied, and a tab flipped up for these pictures :)