Sia and her wig stopped by "The Tonight Show Starring Jimmy Fallon" Wednesday night in anticipation for her forthcoming album "This is Acting." The singer along with Natalie Portman, Fallon and "The Tonight Show" house band The Roots all gathered around with spoons and cups to cover the 1965 classic song "Iko, Iko."

The cover of "Iko, Iko" was catered to Sia's unique style and everyone in the clip all wore Sia wig's that resembled Cruella DeVil's hair. The chart-topped singer also wore a similar wig that covered her face with a huge bow on top.

Later in the show Sia performed her latest single "Cheap Thrills" from her upcoming album. "This is Acting" is the follow-up to the singer's smash hit album "1000 Forms of Fear," which debuted at No. 1 in the United States back in July 2014, according to Billboard. The album included huge hit songs like "Chandelier" and "Elastic Heart."

"This is Acting" will be released Friday, Jan. 29.

Check out Sia, Fallon, Portman and The Roots cover "Iko, Iko," and Sia perform "Cheap Thrills" below: