Cara Delevingne at Burberry show during London Fashion Week with black line painted down the middle of her body

It’s fashion week in London. Yesterday was the Burberry show. And Cara Delevingne showed up in a wonderfully dramatic black dress with a cloaked back that I wish I could afford. Still, that wasn’t the highlight of her look. The highlight of her look is what appears to be a black line painted from...