Her Wikipedia article is here.
Princess Leopoldina Theresa wears a hat and veil for going out along with a high-necked dress. This would be difficult dress if she was still in Brasil. She married in December 1864.
Keywords: 1864, Mayer - Carl, Princess Leopoldina of Brazil, Princess, Bragança family, Wettin family, Princess, straight coiffure, hat, veil, lace, high neckline, bow tie, collar, lace, revers, long tight sleeves, vee waistline, crinoline