The Cast of Stranger Things Is Growing Up Fast: See the Child Stars Then & Now
Though the series is only coming up on its fourth season, its stars have changed so much
Millie Bobby Brown
Just 11 (ha!) when the series started filming, British actress Brown had bit parts on her résumé. Since Stranger Things has taken off, she's become a fashion icon, joined the latest Godzilla franchise, appeared in Maroon 5 and Cardi B's "Girls Like You" video with a slew of stars and plays the titular character in Netflix's Enola Holmes.
Wolfhard, a.k.a. Mike Wheeler, was 12 when Stranger Things began filming, and now at 17, he's racked up credits including It, Carmen Sandiego, The Goldfinch and Ghostbusters 2020.
Proof that Matarazzo, 13 when he took on the role of Dustin Henderson, has grown up? He went to junior prom with his "beautiful girlfriend" in May 2019.
He was 14 when he landed the role of Lucas Sinclair, and in the fall, he's going to college.
On the younger side of the crew, Schnapp was also just 11 when he stepped into Will Byers' cursed shoes. Adorably, he still goes to sleepaway camp.
Of the older "kids," Dyer, a.k.a. Nancy Wheeler, is 25. The show has changed her life in the industry, as well as personally: she's dating costar Charlie Heaton.
Since breaking out on Stranger Things as defensive big brother Jonathan Byers, Heaton, 26, has landed film roles including 2020's The New Mutants.
The oldest of the young bunch, 28-year-old Keery plays heartthrob with a heart Steve Harrington. Of his younger costars, he recently told PEOPLE, "I wish they would stay as little kids forever. No, they're amazing. It's really crazy because you come in the first year and you're not really sure if you're going to work with these people again, and when you come back, these little kids are like full-blown adults. It's been awesome to ... see them handle everything with such grace."