This could be a Voet portrait.
From the lost gallery's photostream on flickr.
There is no question that Marie Mancini is dressed for something more than lounging in an artist's studio.
Keywords: 1664, Marie Mancini, Anne Marie Mancini, Mancini family, Colonna family, Princess, hurluberlu coiffure, ribbon headdress, vee neckline, modesty piece, lace, bertha, gold lace, bows, quarter length close sleeves, arm bands, cuffs, stomacher, necklace, earrings, brooch, clasps