Countess Virginia Castiglione
From the lost gallery's photostream on flickr; spots removed from background with Photoshop and sepia tone removed by gogm.
Countess Castiglione wears a half dome or conical crinoline suggesting the later 1860s in this photo. Her bodice appears to be sleeveless and decorated with two front panels that cover her waist.
Keywords: Virginia Countess of Castiglione, Countess, mistress, Napoleon III, French, straight coiffure, hair jewelry, veil, no sleeves, crinoline, over-skirt, ruching, draped necklace, bracelets