London’s punkish, do-it-yourself approach to fashion is alive and thriving for the three designers who presented their collections as part of the Fashion East showcase for emerging talent. Maarten van der Horst worked simple silhouettes, such as trouser-and-shirt combos and trenchcoats, into a patchwork of deliberately bad-taste patterns — images of grocery store bags, gaudy leopard prints, and black and gold stripes. Meanwhile, Claire Barrow hand-painted illustrations inspired by hard liquor — such as people swilling gin — onto weathered leather jackets and zippered blousons. She showed her collection on models who looked like Fifties rockabillies, in a set done up as a dingy bar. And Ryan Lo, who’s making a name for his off-the-wall knitwear, presented a madcap lineup that evoked a Seventies prom night, with looks including a floor-length party gown haphazardly woven from pink, red and purple frilled tulle.