From Wikimedia; spots removed throughout image with Photoshop and image enlarged by one quarter by gogm.
French 1780s pre-Revolutionary style prevails in Russia as seen in this Lampi portrait of Catherine Stroganova. She may be wearing a sheath.
Keywords: 1793, Lampi the Elder, Ekaterina Stroganova, Stroganov family, Countess, Russian, long high curly coiffure, ribboned cap, long tight sleeves, cuffs, lace, full skirt, jeweled neckline, wrap