It might only be July, but Zara's F/W 18 collection has already started hitting stores. Among the Friends T-shirts and knitted skirts, we've noticed a rather unlikely leggings styling trick: The models are all wearing a pair of simple black leggings underneath their outfits. Many of them also have on backless pointed mules. Perhaps it's the witchy flats or the extreme layering, but I think if you add a venti-sized black coffee, an ankle-skimming coat, and some oversize sunglasses, you'd look like a long-lost Olsen sister. The likes of Balenciaga and The Row have similar pant-length black leggings, indicating that perhaps they are about to become an essential base layer for the fashion crowd.