Since Stranger Things premiered in 2016, Netflix subscribers just can't get enough of Millie Bobby Brown's Eleven and friends. The first season was critically acclaimed for its eerie storyline and retro 80s setting. The gang on the show were supposed to be 12-14, but how old were they when Stranger Things began and how old are they now? With season 3 starting on Netflix this week (July 4) we thought we'd see what they'd been up to since they first appeared on the small screen.