Seated Portrait of Marie-Philippe-Claude Walbonne (1763-c.1837) Francois Pascal Simon Gerard (1770-1837)

The picture has something of this: people, woman, portrait, girl, wear, model, veil, wedding, dress, furniture, light, bride, window, nude, fashion.
Perhaps it’s a painting of a woman in a white dress sitting in front of a window with a book in her hand.