When we grew up, we swore we would never wear tie dye again. Tie dye and shell suits. We looked back at pictures of us in neon ripples of colour and wondered how we could possibly put it on. And yet here we are – it’s officially trendy again – tie dye that is (shell suits still no. But it’s a matter of time). We find ourselves drawn back in and wishing we hadn’t chucked it all out the first time round.