Fluff. As in feathery but substantial Mongolian lamb that along with shearling as been everywhere at the New York shows. It’s easy to see why: It’s cozy, it’s comforting, it’s infinitely more alluring than wrapping yourself up in a down coat, let’s be honest. And why did Vera Wang go for it, frothing it over the shoulders of a voluminous black coat, or all over this vest? Because it’s nature’s way of wrapping the body in something solid yet oh so soft. Thinks of it as being like the tulle that Wang clouds around her clothes—but infinitely warmer.