Millie Bobby Brown Reveals How She Found Out Stranger Things' Ending Before Her Costars

But when it came time to go over the script for the series finale, the 21-year-old admitted that the experience proved to take quite an emotional toll.

“We didn't sit at a table,” she recalled. “We sat on couches, and we cried for basically two hours straight.”

Indeed, having spent nearly a decade working together, Millie and her costars—including Finn Wolfhard, Gaten Matarazzo, Noah Schnapp and Caleb McLaughlin—have evolved significantly over the years both onscreen and off.

“I grew up on the show, I traveled the world with these guys,” Caleb told E! News in May. “I'm really humbled and grateful for the experience.”

And the 24-year-old intends to carry what he’s learned on set into his future career endeavors.

“I've changed, I grew, I've been molded, I've been influenced,” he continued. “Stranger Things has set the bar high for me and my creative look on a lot of things.”

Volume two of Stranger Things season five premieres on Netflix Christmas Day, followed by the series finale on New Year’s Eve. Until then, keep scrolling to see how the show’s young stars have evolved over the years…

(E! and NBC are both part of the NBCUniversal family.)