Natalie Portman, Sia Join Jimmy Fallon, The Roots On Iko Iko

I think Jimmy Fallon is ultra cool! He has a way of drawing is guests into uncharted waters, usually with great results. Natalie Portman and Sia recently joined Jimmy, and the Roots for a fun rendition of Iko Iko. I can't help wondering how Questlove hid his hair...