The wondrous Hilma af Klint, Tania Ferrier's angry underwear and the question of portraiture

The rediscovery of Hilma af Klint's abstract paintings has taken the art world by storm, but what meaning can we find in her powerful, mysterious work? The curator of the largest exhibition to reach Australia talks us through her symbols and spiritual quest. Plus, hear from an artist whose feminist-inspired underwear became a hit with the likes of Madonna. Then it's time to ponder… what do artists actually want to portray in a portrait?