Not just for hippies: this exhibition explores the art of tie-dyeing through a global lens. For those who didn't spend their childhood tying up T-shirts and dipping them in dye: tie-dye is a simple way of printing patterns on fabric by tying or scrunching up pieces of it and sectioning it off with strings. Variations (sewing bits of fabric beforehand, twisting it and so on) exist as well, and the concept itself has been around since ancient times. The Bunka Gakuen Costume Museum has now amassed around 130 items that incorporate tie-dye techniques from 25 different countries, including India, Morocco, Peru and the Philippines. They even have tie-dyed kimono – now that's a nice twist.