Back in the day, Ariana made loads of YouTube videos, where she would sing for fans, answer questions and, in this case anyway, totally get her groove on like crazy.
In this vintage (well, 2007) video, Ariana and a pal do a full on dance routine/music video to Christina Aguilera's "Ain't No Other Man."
It's pretty much like the cutest thing ever.
Meanwhile, Ariana is still totally into making hilarious videos - check out Ari and Lea Michele singing a Spice Girls classic, with helium voices and distorted faces!
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Gallery | Best of Ariana Grande Memes