From Wikimedia.
Josephina wears another less formal Empire dress with long upper puffed sleeves and more jewelry for this portrait. Her son, being of a Grand Duke, wears a uniform.
Keywords: 1816, Josephina Fridrix, mistress, Grand Duke Constantin Pavlovich, straight coiffure, hair jewelry, bun, sweetheart neckline, modesty piece, long upper puffed sleeves, cuffs, waist band, bows, Empire waistline, close skirt, necklace, earrings, wrap