Agostina ca 1866, 132.8x97.6 cm, The National Gallery Jean-Baptiste-Camille Corot (1796-1875)

The picture has something of this: people, wear, woman, portrait, retro, sword, costume, indoors, dress, sash, weapon, princess, girl, vintage, royalty, monarch.
Perhaps it’s a painting of a woman in a dress with a hat on her head and a handbag in her other hand and a tree in the background.