What did Jane Austen and friends wear? Early 1800s fashions were elegant and pretty with high waists and fabrics that were almost transparent. These Empire style gowns, named after Napoleon’s first Empress, became popular throughout Europe, and were then copied around the world. Colorful outwear was added to make an ensemble more attractive and warmer. History Notes Book 26 Fashion Women 1805-1809.
https://books2read.com/SuziLoveFashionWomen1805-1809

The Empire waist gown defined women’s fashion during the Regency Era. ‘Empire’ is the name given in France to the period when Napoleon built his French Empire. High-waisted, loose gowns were adopted by the aristocracy as a symbol of turning away from the fussy, elaborate and expensive clothing worn in the 1700s. Jean-Jaques Rousseau advocated copying peasants and returning to a simpler life and more natural fashions. Unrestricting clothing was part of the new Democracy in France and these simpler and flowing fashions were adopted all over Europe, including Britain and despite the continual wars being fought against France during the early 1800s. Not even war stopped fashions from being copied everywhere.