My guess would be that the client is wearing her shift, stays and petticoat, and that is her dress which is discarded over the chair, but she may be being fitted over the dress, and in any case, the image doesnt provide enough petticoat information to help me much: The image in the 1811-18 editions of The Book of Trades shows a clearer view of stays, and what appears to be petticoat with a tucked hem under her stays, but could be a chemise, but which doesnt provide much construction information in any case: There is this 1813 fashion plate, which also either shows a long chemise, or a petticoat worn under her stays: The lack of mention of a petticoat, when all other garments are listed, and the matching trim on chemise and hem, would indicate they were the same garment
Honestly, it drapes beautifully and feels quite luxurious for the price paid
The more styles you hate can be helpful as you can then narrow it down to what you like and feel confident in
A generic red plaid shirt works exactly the same as a branded one
Added side pockets for extra practicality
I decided to throw on a black bow belt to help break up the nude color