How can a nice woman become a Lady of leisure? The old-fashioned way, by exploiting the labor of others. That was facilitated by the institution of slavery as described here. A sketch about her husband, an MP named Egleton, who changed his name to Kent and was also created Baronet, is here.
From mutualart.com/Artist/Sir-Joshua-Reynolds/849A9DDDA212F7BF/Artworks. Also posted to the Reign of Louis XVI - 1775 to 1789 Album.
French Ladies wore powdered coiffures and jewels indoors while British Ladies adopted similar, but unpowdered, coiffures and fewer jewels outdoors.
Keywords: 1777, Reynolds, Mary Wordsworth, Lady Kent, Wordsworth family, Egleton/Kent family, British, high large curl coiffure, headdress, chemise, modesty piece, vee neckline, fitted zone bodice, square neckline, clasp, long tight sleeves, ruffled cuffs, under-bodice, waist band, full skirt