Kate's ponytail may look effortless, but it's anything but. Create this in four stages: first backcomb and pin back the front third of the hair to give it a small quiff. Then pull the bottom third up into a high ponytail. Twist the remaining hair (including the ends of the front section) and fasten in another ponytail directly on top of the first, pulling it gently to give lift. Then curl the hair with a wide tong to add movement.