Countess Saint Hippolytus, nee princess Trubetskaya Zinaida Serebryakova (1884-1967)

The picture has something of this: people, famous, fame, pop, talent, entertainment, person, event, portrait, popularity, woman, necklace, wear, dress, veil.
Perhaps it’s a painting of a woman sitting in a chair with her hand on her hip and a cane in her other hand, in front of a white background.