This portrait can easily be mistaken for Voet’s portrait of Hortense Mancini (last image) - same wrap, same bodice, same brooch, same earrings. But the background and face are different.
From the lost gallery’s photostream on flickr; removed spots with Photoshop and filled in shadows.
Hortense’s sister Maria shows off with long tendrils of hair, a low off shoulder neckline, and a spectacular brooch like sister Hortense.
Keywords: Voet, Marie Mancini, Mancini family, Colonna family, Princess, long hurluberlu coiffure, off shoulder scoop neckline, chemise, lace modesty piece, elbow length full virago under-sleeves, cuffs, quarter length full over-sleeves, earrings, brooch, wrap