Wikipedia has two versions of the same image, one dated to ca. 1820 and the other explaining the dress is from about 1830.
Sabine Baring-Gould lived from 1834 to 1934.
Stéphanie wears dual upper puffed sleeves and a belted almost natural waistline in this Baring-Gould print demonstrating it is from ca. 1830.
Keywords: Baring-Gould, Stéphanie de Beauharnais, Princess, Grand Duchess, Beauharnais family, Bonaparte family, Baden family, German, hurluberlu coiffure, bandeau, tiara, bun, vee neckline, dual upper puffed sleeves, belt, natural high waistline, brooch, clasps