Bianca Boni ( 1786 - 1857 ) was an Italian painter. Bianca Boni s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 186.14 USD for A young lady loosely dressed in white shift, blue stole over her shoulder and haolding a garland of flowers in 2005 to 910.36 USD for Cumaean Sybil in 2011 , based on the size and medium of the artwork.