The Hadid sisters really own seasonal dressing. Gigi Hadid revels in fall—and not just because of her cozy cashmere and knitwear brand, Guest in Residence—as the model often layers up and opts for androgynous pairings, with penny loafers, straight-leg jeans, and leather outerwear. Her sister Bella Hadid, meanwhile, delights in summer style—just look to her recent turn at Cannes Film Festival—with slinky it-girl dresses and sheer tops, as well as a summery blonde hair transformation.