1788 Marchioness of Queenston by Richard Cosway (location unknown to gogm)
I saw this in Wikimedia dated 1788. 1798 or 1808 would be more appropriate for this Empire waisted dress with a neckline fraise. 1798 because the dress has no discernible bodice. But the date at the base of the column to right is 1788. The first appearance of a partlet in these albums is here in 1798 and the first appearance of a fraise is here in 1804.