Dressing in a 1790s round gown is a short 23 second clip.
This video of getting into an 1805 gown has been around longer, but is worth revisiting. Koshkacat has a fabulous site. In this video one can see why a maid’s (or a relative’s) help is required.
At the bottom of this web page by Wm Booth Draper, you will see the sort of straight pins that were used to close gowns.
This chocolate brown chintz cloak from 1790 has a cream and turquoise floral print. The hood and edges are deeply pleated, and the entire garment is lined in cream flannel with a scarlet floral print and a tan print cotton. Images@Christie’s.