![04_DSC_0724_web](http://static1.refinery29.com/bin/entry/05a/x/1019306/04-dsc-0724-web.jpg)
Take it from this London street star — mastering the perfect spring outfit is all about the math. Match two ultra-feminine items with a couple heavier ones, like this Grease-era leather paired with silken layers, and you're an instant style whiz. Danny and Sandy did do their best work together, after all.