Grand Duchess Maria Luisa of Tuscany with crown by ? (location unknown to gogm)
From Wikimedia; enlarged by half by gogm.
Infanta Maria Luisa wears a wide pannier dress that is in keeping with being a tontillo in this formal portrait.
Keywords: Infanta Maria Luisa, Princess, Empress, Borbon family, Habsburg family, high straight coiffure, lace headdress, scoop neckline, modesty piece-bertha, stomacher, elbow length close sleeves, forward-back flared engageantes, lace, vee waistline, panniers, necklace, draped necklace, earrings, robes, regalia, tontillo