Mrs. Daniel Hubbard (Mary Greene) John Singleton Copley (1738-1815)

The picture has something of this: people, portrait, woman, wear, dress, royalty, opera, costume, veil, jewelry, princess, lid, music, fashion, retro, theater.
Perhaps it’s a painting of a woman wearing a dress and holding a piece of paper in one hand and sitting on a bench in front of a dark background.