Sia Performs 'Alive' with Dancer Maddie Ziegler on 'Ellen' (Video)

Maddie Ziegler shows off her dance moves with tons of emotion while performing with Sia on the latest episode of The Ellen DeGeneres Show, which aired on Tuesday (December 1).

The 39-year-old singer performed her new single “Alive” while standing behind a black dress attached to the wall. Maddie danced throughout the performance and they both ended up on the ground at the end.

PHOTOS: Check out the latest pics of Sia

During the appearance, Sia did something she has never done before on television… reveal her face!