Thankfully, the cover was caught on about 40 different camera phones, and you can see Dion gleefully bopping around and using her legendary voice to slide around "Cheap Thrills" like a playground.
It's no secret that Dion is a big ol' Sia fan. Back in July, the French Canadian force did an impersonation of the singer on The Tonight Show with Jimmy Fallon. And in August, she wrote a tribute to Sia for Billboard, extolling, "I'm mesmerized by her confidence."
“She’s an artist with a clear vision—for her songs, her videos, her performances,” Dion wrote. “This industry can break you; it’s tough. But Sia has managed to carve out her own path, on her own terms and in her own time.”
Next, watch Fuse's old-school Céline Dion interview: