This week we’re taking a deep dive into some of the year’s biggest fashion trends. We’re going to figure out what the deal is with everyone wearing small sunglasses. We’ll have a go at deconstructing fashion’s love affair with the ugly trainer. And we’re going to get our heads around a fashion season in which the Dior saddle bag came back (again) and plastic bags became the latest must-have item. i-D Arts and Culture Editor Matthew Whitehouse is joined by i-D Features Editor Tish Weinstock and i-D Contributing Editor Douglas Greenwood.