Seen it: Yayoi Kusama.

'The Priestess of Polka Dots' 82 year old Japanese artist Yayoi Kusama has been producing work for the last 60 years. Her pieces come in many forms including paintings, sculptures and films. Her signature dots were seen throughout the exhibition which is bright, colourful and perfectly bonkers. It's on till June at the Tate Modern. Well worth a look.