From Wikimedia; monocolor tint removed and image enlarged by half. Also posted to Infanta Luisa de Orleans’ Subalbum here.
The bare shoulder sleeves date this to about 1900. Several photos show her wearing the Diana’s crescent moon hair jewel.
Keywords: Louise d'Orléans (1882-1958), Infanta Luisa de Orleans, Orléans family, Bourbone delle Due Sicilie family, Borbón family, Princess, bouffant coiffure, necklace, lace pouter pigeon bodice, sweetheart décolletage, modesty piece, hair jewelry, choker necklace, bodice, elbow length full bare shoulder sleeves, close skirt