โVirginia Oldoini, Countess of Castiglioneย (1837โ1899), better known asย La Castiglioneย , was an Italianย aristocratย who achieved notoriety as a mistress of Emperorย Napoleon IIIย of France.ย The Countess was known for her beauty and her flamboyant entrances in elaborate dress at the imperial court.ย โFor four decades she directedย Pierre-Louis Piersonย to help her ...