The star of Stranger Things and the star of Sia's videos have become super-powerful best friends.

In a new Q&A for Interview magazine, dancing phenom Maddie Ziegler spoke with her new pal Millie Bobby Brown, a.k.a. Eleven from the Netflix series. The pair reminisced about the time they met last July and how they ended up totally fangirling over each other.

"I got tickets to go see So You Think You Can Dance because I've been watching you since I was about 7, and I was crazy when I knew you were actually going to be on the show," Brown said. "And the whole show I was looking at you like, 'Please let her look at me.' And then they told me that I could go backstage and meet you, and I'm literally, like, taking deep breaths, like, 'Oh my goodness,' and then you were a normal human being. You were Maddie Ziegler. Then you followed me on Twitter — and I had a meltdown — and the rest is history, really."

Ziegler hadn't caught up with Stranger Things then, but the next time she hung out with Brown, she'd watched the whole thing — and mercilessly made fun of Brown for her kissing scene.

Since then, Ziegler and Brown have had all kinds of adventures, like the time Brown came over for her first proper sleepover and the fire alarm went off. They're also planning on assembling a dog squad with their dogs and all their friends' dogs, in case you thought their blossoming best friendship couldn't get any cuter.