Take a stroll on a Saturday afternoon in NYC right now and you'd be forgiven for thinking you'd just stepped out of a time vortex into an age when punk was new, hair was huge and the primary mode of transport was the space-hopper. Nope — you're still in 2015, man, it's just '70s style is everywhere right now. But who wears it better: the OG icons or the new kids on the block?