Sadie Sink thinks she was a "mature" child star.
The 23-year-old actress was just 10 years old when she played the title role in the Broadway revival of 'Annie' and then found global fame when she was cast in the Netflix hit 'Stranger Things' in 2016, and explained that she has tried to bring her "untraditional expderience" to her new role as tearaway Shelby in the play 'John Proctor Is the Villain'.
