Portrait of Sophie Troubetskoy (1838-96) Countess of Morny (fragment) Franz Xavier Winterhalter (1805-1873)

The picture has something of this: fashion, portrait, girl, woman, model, veil, necklace, jewelry, dress, princess, wear, people, retro, fantasy, beautiful, glamour, festival.
Perhaps it’s a painting of a woman in a white dress with a blue ribbon around her neck and a bouquet of flowers in her left hand.