Lucas Cranach the Elder: The Three Graces, 1531.
There are at least three paintings of the Three Graces by Lucas Cranach the Elder, all from within a few years. This is the middle and maybe most appealing one. Note his obvious interest in natural poses. I do wonder a bit about his fascination with big hats though.
Jean-Étienne Liotard: The Three Graces, pastel on parchment, drawn in 1737 when he was in Rome, now in the Rijksmuseum in Amsterdam.
In the years 1469/70, Cosimo Tura and Francesco del Cossa painted some allegorical frescoes for the Este family in their Palazzo Schifanoia right outside the walls of Ferrara. This is a detail from the background of the Allegory of April, showing the three Graces, the oldest surviving post-classical rendering of this subject.
Vivat! Crescat! Floreat! 
