From Wikimedia.
Jane’s coiffure comes close to ca. 1700 coiffures while her sleeves originate from rolls à la Catherine de Medici and are paned à la the 1620s. But the overall silhouette appears to be early 1820s.
Keywords: Ross, Jane Digby, Jane el Ezrab, Countess of Ellenborough, Digby family, Law family, von Venningen family, Theotokis family, el Mezrab family, Countess, curly coiffure, bun, hair jewelry, surcote, lace lapels, rolled paned sleeves, necklace, bodice, trapezoidal neckline, jeweled waist band, wrap, theatrical dress