'Stranger Things' Star Millie Bobby Brown -- Great Times With My Fake Parents!! (VIDEO)

"Stranger Things" star Millie Bobby Brown is quickly becoming Hollywood's most wanted.

We caught up with the kid Sunday at LAX and we just had to know -- what's it like hanging with Aaron Paul? You'll recall he joked about wanting to adopt "Eleven."

Check out the vid ... Millie's just way too popular.