Portrait of Alexei G. Bobrinsky a masquerade costume Hermitage ~ Part 05

The picture has something of this: portrait, lid, people, costume, woman, veil, cap, wear, retro, coat, magic, wig, peasant, bonnet, cape.
Perhaps it’s a painting of a woman in a black dress with a white feathered hat and a feathered shawl on her head and a black background.