The video is for the singer's new Christmas song Santa's Coming For Us, a track which is sure to dominate airwaves over the coming month.
It features Caleb McLaughlin, who plays Lucas in Stranger Things, and It ‘Losers Club’ members Sophia Lillis and Wyatt Oleff.
The kids wear festive jumpers and dance with real life couple Dax Shepard and Kristen Bell, who play their parents.
They are soon joined by grandparents played by Henry Winkler and Susan Lucci. While Def Comedy Jam and Curb Your Enthusiasm actor JB Smoove makes an appearance as Santa Clause himself.
The song is taken from Sia's recently released Everyday is Christmas album.