The first layer of the outfit is the chemise, followed by the drawers. Both of these I made as a set using the Laughing Moon Mercantile Pattern. Whether the drawers go under the chemise, under the corset, or over the corset and chemise is a matter of personal preference. There is evidence they were worn both ways. I prefer to put my drawers on over the corset. This is hard to do on a dress form so I have put the drawers under for this demonstration.
Next is the corset. This is the “Dore” corset that came in the same pattern envelope from Laughing Moon Mercantile with the chemise and drawers. This is a great corset pattern! Mine is covered with pink silk.