From the lost gallery’s photostream on flickr.
This portrait and the Rubens’ 1605 portrait of Brigida Spinola Doria show similar dresses and viewing angles. Brigida stands and looks lovely, but Isabel interacts with a subordinate who symbolically has a book, crown, and flowers (but no tulips). The subordinate appears to be a nun and Isabel may be holding a rosary although the larger beads and crucifix aren’t visible.
Keywords: Rubens, Infanta Isabel Clara Eugenia, Princess, Spanish, Habsburg family, straight coiffure, jeweled headdres, high enclosing neckline, neck ruff, jeweled robes, long tight false sleeves, ruffled cuffs, girdle, tabbed bodice, basque waistline, full skirt, carcanet necklace, necklace, brooch, clasps, regalia