Fashion is no longer du jour – of the day – it’s of the second. Online platforms are using real-time data and analytics to micro-target what we buy and what we wear. At best, it’s a form of hyper-personalisation, matching people to their clothing preferences. At worst, it risks turbo-charging our already fast fashion industry. But there are also efforts underway to rein-in the waste and make fabrics from more environmentally-friendly materials.