Australian pop star Sia has enjoyed a fruitful collaboration with Maddie Ziegler, the young dance star who has appeared in several of her music videos.

Her most famous performance came in the video for 'Chandelier' - but now the pair have joined forces again for The Ellen Show.

With Sia singing her new track 'Alive' - taken from her forthcoming album 'This is Acting' - while cloaked behind a large black dress, Ziegler strutted her stuff.

The impressive performance can be viewed below: