Raegan Revord, who is known for her role in Young Sheldon as Sheldon Cooper's twin Missy Cooper, gave a heartfelt reaction to her first Entertainment Tonight interview for the series.

Jim, how similar or not was your childhood to the young Sheldon? JIM: Mine was completely different. I was not an overly bright child. I was mediocre, and I just didn't have… I didn't befuddle my ...