Beloved for her insouciant sense of style both on and off the runway (not to mention those breathtaking brows), model Cara Delevingne is the one to watch come London Fashion Week-if only just to find ways to mimic her now-signature look.

More from Vogue:
The best beauty looks for all ages
Everything you ever wanted to know about denim
Best Met Gala looks of all time
Michelle Obama's best-dressed moments
10 coats and bags you need for fall