Just before the release of Sia's album This Is Acting this Friday, some last minute two-toned wig promotion wouldn't hurt anyone. Jimmy Fallon welcomed the talented vocalist as his musical guest, where Sia performed 'Cheap Thrills' from her forthcoming project.

Things got interesting however when the Roots, Natalie Portman and Fallon spawned the same wig and joined Sia in a surprisingly great rendition of the new Orleans classic 'Iko Iko.