Has Millie Bobby Brown Joined the Cast of Avengers: Infinity War?!

Avengers: Infinity War is currently filming at Pinewood Studios down in Fayetteville, GA, and directors Anthony and Joe Russo shared an unlikely peek behind the scenes on Friday. It's a picture of the two of them with "guest director" Millie Bobby Brown. So, uh, what is Eleven doing on the set? There's no real explanation yet, but since Stranger Things also films in Georgia, it's probably safe to assume the Russo brothers are fans and invited Brown to check out their set. Still, we'll be spending the next few days writing Stranger Avengers fanfic.