From Wikimedia.
Dorotheé, born in 1761, wears a chemise à la reine, publicized by Vigée-Lebrun in 1783, with a high neckline framed with a ruffle. Her dress is adorned with a glossy sash while she uses red cloth to cover her towering coiffure and for a large wrap.
Keywords: Graff, Dorothea von Medem, von Medem family, von Biron family, Countess, Duchess, high curly coiffure, turban, veil, high neckline, bertha, lace, long tight sleeves, cuffs, waist band, natural waistline, full skirt, necklace, bracelets, chemise à la reine