From Wikimedia.
Countess Anna's gargantuan feathered hat dominates most of the picture while white under-sleeves dominate the lower right corner.
Keywords: 1838, Bazhenov, Anna Alexeyevna Orlova, Orlov family, Countess, Russian, neo hurluberlu coiffure, feathered, ribboned hat, off shoulder vee neckline, epaulettes, dual upper puffed sleeves, cuffs, necklace, earrings, bracelets