1805 Typical Regency Era, or Early 1800s, Muslin Dress. Long sleeves, square neckline, and decorated with Palm Tree embroidery. via Whitaker Auction.

Definition Empire Style:  Named after the First Empire in France, by 1800 Empire dresses had a very low décolleté, or neckline and a short narrow backed bodice attached to a separate skirt. Skirts started directly under the bust and flowed into the classical relaxed wide styles of Greece and Rome. This style of dress is associated with Jane Austen and her contemporaries as a simple cotton high-waisted dress was worn most days and accessorized according to the importance of the occasion.