Duchess Marie of Württemberg second wife of Ernest I, Duke of Saxe-Coburg and Gotha (Schloß Callenberg, Coburg Germany)
She was the daughter of Princess Antoinette Ernestine Amalie of Saxe-Coburg-Saalfeld and stepmother of Prince Albert of Saxe-Coburg-Gotha who married Queen Victoria. She was Godmother to their first child, Albert Edward, later Edward VII. Marie of Württemberg's Wikipedia article is here.
Marie wears an Empire-style dress, but with a slightly lower neckline and an A-line skirt below. The coiffure, neckline, ruff, and sleeves are Empire.
Keywords: Württemberg family, Wettin family, Duchess, German, hurluberlu coiffure, bandeau, square neckline, neckline ruff, lace, quarter length puffed slashed sleeves, Empire low waistline, waist band, A-line skirt, necklace, earrings, jeweled sleeves, bracelets, wrap