What a grand finale!
Not only did they crown the winner of the coveted Mirrorball Trophy last night on Dancing with the Stars, but Julianne and Derek Hough popped by for a dance during the show.
And if that wasn't enough, Sia was there live singing her hit song Elastic Heart to give the soundtrack to the duo's performance (above).
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Sia, of course, appeared with her face covered as she's been known to want to keep her privacy, but it didn't take away from the AH-Mazing performance she gave!
As per usual, Julianne and Derek were both absolutely incredible and we wouldn't expect anything less! The Houghs had a little help from mini versions of themselves that they paralleled on stage next to them.
Sia's song was a hauntingly beautiful soundtrack to each pair's struggles they showed through their interpretive dance.
Ch-ch-check out the amazing performance for yourself (above)!