Having already made its mark in the Seventies and Nineties, tie-dye is now back with a bang. Louis Vuitton gave it a biker-chick makeover, while Altuzarra paired tropical brights with thigh-grazing slits. But if you thought the colourful trend was all about its hypnotising prints, Emilio Pucci, Roberto Cavalli and Paco Rabanne showed a softer side to tie-dye. Now, who said psychedelia couldn’t be girly?