Instead of a traditional clip-in hair fall, Kristen is wearing track extensions — just a simple length of hair. Abergel wrapped the track around her own natural ponytail so that her shorter hair wasn't visible, and then pinned the track to the base of her ponytail. He covered the track completely by wrapping a piece of Kristen's hair from underneath around the track and then pinning it. To keep it all in place, he added Fekkai Coiff Sheer Hold hairspray. So whether your hair is all yours, or you're using extensions like Kristen, that's the secret to a neat, perfect ponytail.