The Three Graces is a grisaille painting by Peter Paul Rubens, dating to 1620-1623. It is now held in the Galleria Palatina in Florence.
It was acquired by Monsignor Francesco Airoldi, nuncio to Brussels, who offered it to cardinal Leopoldo de' Medici, a great admirer of Rubens. The cardinal's art collection passed to the Uffizi after his death - the grisaille was transferred to the Palatina in 1928.(Wikipedia)