In the blink of an eye, Millie Bobby Brown went from playing Eleven on “Stranger Things” to turning 21. Join Page Six as we celebrate the Hollywood It girl-turned-farm girl, who low-key became New Jersey royalty after marrying Jon Bon Jovi’s son Jake Bongiovi in 2024. Find out how the British actress avoided the typical pitfalls of child stardom, clapped back at the haters, and what’s next for MBB. The sci-fi leading lady will star opposite Chris Pratt in the robot flick “The Electric State,” hitting Netflix on March 14.