Image: @billboard Twitter
Cher's performance was definitely one of the most exciting at this year's Billboard Music Awards.
What she may not have known, though, was that another spectacular performance was happening backstage at the same time.
Celine Dion, like us, is a massive fan of Cher's.
As she was her idol dance across the stage whilst singing 'Believe', Celine had a little boogie before breaking out into song and getting everyone who was with her to join in.
Videos of this moment have started circling the internet and honestly, this looks like the best Cher singalong we've ever seen!
This is absolutely fabulous!
Cher received the Icon Award at the Billboard Music Awards this year.
She received a standing ovation from the audience after performing two of her biggest songs and revealed that even at 71 "I can do a 5-minute plank".
We love you, Cher!