Ugliness. The Three Graces: take pity on the ugliness.
Aglaia, Euphrosyne and Thalia. They were daughters of Zeus and the nymph Eurynome. Eurynome lived in the oceans and it is possible that she was a siren (sometimes, she was represented with a fishtail) and her daughters inherit her aquatic grace to dance as waves, in that subtle way which only goddesses can do. But Eurynome give them much more since she was close friend of Hephaestus, god of fire, as she was the only one who had helped him in his sufferings (he had been send to hell a cause of his ugliness). Then, her daughters not only could transmit their jolliness to everybody around their aquatic influenced but they gave the strength to keep on dancing and singing from days: Aglaia, Euphrosyne and Thalia were essential in every celebration, even in Olympus agapes.
Half-naked and disheveled by joy, they have been represented dancing and enjoying from ancient times: Botticelli painted three slim smart young women; Rubens, three fat sensual ladies; Courtney Curran saw them as spiritual beings (nothing to do with the appetites of the flesh).
Apollo, god of Arts; Mercury, god of winds; and Dionysus, god of wine (therefore, of the earth) gave them their favors too and then, the Three Graces controlled all the elements (earth, water, air, fire and ether (art)).
All around them was happy and still today, we admire them for this… but, remember, their mother took pity on the ugliness too… Who was actually their mother? Maybe the White Goddess? Maybe the Mother Nature?
** Everybody in every time has represented the Tripartite Goddess. Not only the Western tradition but in Asia, Africa… see examples.
** Other article about Charles Courtney Curran: