The cousins: Queen Victoria and Victoire, Duchesse de Nemours Franz Xavier Winterhalter (1805-1873)

The picture has something of this: people, portrait, woman, girl, dress, fashion, model, princess, veil, wedding, queen, bride, lady, wear, costume, love, beautiful.
Perhaps it’s a couple of women sitting next to each other in front of a painting of a man and a woman.