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Sia, Jimmy Fallon, Natalie Portman, and the Roots Sang ‘Iko Iko’ on ‘Fallon’

The wigged one also performed "Cheap Thrills" from her forthcoming album, 'This Is Acting'

Sia will very soon drop her seventh studio album, This Is Acting, and to celebrate, she stopped by the Tonight Show Starring Jimmy Fallon to perform a rendition of “Cheap Thrills.”

Wearing her now-trademark two-tone wig, Sia sang surrounded by a trio of (also wigged) dancers in nude-and-black leotards. Later, two-tone theme continued into a brief cover the Dixie Cups’ 1965 hit “Iko Iko” with a wigged Natalie Portman, the Roots, and Fallon himself.

Watch both excellent performances below, and look for This Is Acting on January 29.