Madame Sophie de France (1734–1782) Francois-Hubert Drouais (1727-1775)

The picture has something of this: people, portrait, wear, woman, dress, necklace, fashion, jewelry, gown, model, royalty, veil, queen, princess, fashionable.
Perhaps it’s a close up of a painting of a woman in a blue dress with flowers on her neck and a brown horse in front of a black background.