Mrs. Fiske Warren and Her Daughter Rachel John Singer Sargent (1856-1925)

The picture has something of this: people, portrait, dress, wear, woman, veil, model, costume, girl, fashion, princess, baroque, vintage, wedding, lady, queen.
Perhaps it’s a painting of a woman and a child sitting next to each other in front of a table with a vase and a mirror on top of it.