Ellen DeGeneres wasn't about to let Halloween go by without putting her Sia costume to work.

Dressed up in Sia's wig, bow, and black dress, Ellen nailed a lip sync of the Australian singer's smash hit "Chandelier." She didn't have to do it alone, though. Halloween queen Heidi Klum showed up to join her, dressed as Sia's go-to dancer, Maddie Ziegler.

After putting together an approximation of the Nostalgic for the Present Tour setup, Ellen and Heidi put on a show that would make Sia proud, high kicks and all.