DO YOU UNDERSTAND an outfit's ratio proportions? Because once you do, you'll be able to spot what works, even on the hanger. Proportion, of course, isn't immune to trend cycles, and right now, based on what we saw on street stylers throughout fashion month, the 60/40 rule is having a moment. The popularity of the theory – 60% bottom half, 40% top half – has been driven largely by the rise of the cropped jacket. It started with the ubiquitous leather bomber, but the hemline has been inching north across a plethora of styles: A-line trenches, track tops, nipped-in tailored jackets that barely skim the navel, windbreakers, even – wait for it – bolero styles. The message is clear: if you want to look current, go 60/40 and hoik that…
