Bet you never expected to hear 'Shots' done this way.
Dion first announced in July that she and the 'Perfect' singer had collaborated.
She also told Jimmy Fallon producers had doubts her now-iconic Las Vegas residency would last.
What makes a good Sia impression according to Celine? A little rasp and a whole lot of hair, apparently!
Angelil, Dion's husband, died in January after a long battle with cancer.
The pop superstar performed the Queen cover, and it was a triumphant moment.
'I cannot be selfish. You have to let people go,' she says in a new interview.
Plus, she'll be the recipient of one of the show's biggest distinctions.
From Celine Dion to Halle Berry, here are 25 stars who grew their family a little later in life.
Dion has been on a hiatus since January 16.