Shtemberg, Viktor Karlovich. Portrait of Sophia Mikhailovna Raevskaya Hermitage ~ part 13

The picture has something of this: veil, people, woman, portrait, dress, wedding, flower arrangement, wear, bride, girl, princess, costume, baroque, crown, lid.
Perhaps it’s a painting of a woman in a white dress sitting in a chair with a bouquet of flowers in her hand and a large hat on her head.