Millie Bobby Brown is one of the more talented under-20 actresses working in Hollywood today. Outside of her breakout role in Stranger Things, she also added a spunky energy to Netflix’s better-than-it-looks Enola Holmes, and she provided human depth to the CGI slug-fest that is Godzilla vs. Kong. But before she was cast as Eleven, Bobby Brown was told that she was “too mature” to make it as an actress. She was 10 years old.