Millie Bobby Brown, who just celebrated her 13th birthday, showed to the world that she was once a giddy little girl. She posted a very adorable video of herself dancing and singing inside her room to the tune of Jessie J's "Domino"!
The Stranger Things star captioned the amusing black and white clip: "6 years ago, I made videos on my computer. I honestly don't know why but I loved it. I want to share this video with you!"
And yup, the much smaller Eleven still has long hair in this video. Watch it below:
What can you say about Millie Bobby Brown's cute throwback video? Tell us in the comments!