Sadie Sink Opens Up About Close Friendship with Millie Bobby Brown: We'd Be 'Lost Without Each Other'

Millie Bobby Brown and Sadie Sink onstage at Nickelodeon's 2018 Kids' Choice Awards at The Forum on March 24, 2018 in Inglewood, California.
Millie Bobby Brown and Sadie Sink onstage at Nickelodeon's 2018 Kids' Choice Awards at The Forum on March 24, 2018 in Inglewood, California.

Chris Polk/KCA2018/Getty

Sadie Sink and Millie Bobby Brown's friendship extends far beyond the Stranger Things set.

Sink, 20, revealed she, Brown and their Stranger Things costars are very close friends in real life — so much so that they've played critical roles in helping each other navigate growing up in the spotlight.

RELATED: Sadie Sink Feels 'More Comfortable' with Herself at 20 — But Not 'Quite Like an Adult Yet'

"Having each and every kid on the show — I think we'd be so lost without each other," Sink told Access. "We really depend on each other when things get absolutely nuts, or when you need to talk to someone who understands exactly what you're going through. We have each other."

She continued, "Especially having Millie — she was the only girl at first. So, I think, it was nice that we had that connection."

Millie Bobby Brown and Sadie Sink attend the "Stranger Things" Season 3 World Premiere on June 28, 2019 in Santa Monica, California.
Millie Bobby Brown and Sadie Sink attend the "Stranger Things" Season 3 World Premiere on June 28, 2019 in Santa Monica, California.

Charley Gallay/Getty

The All Too Well (10 Minute Version) short film actress praised her cast mates for their support, calling their connection "really unique and something I'm so grateful for."

RELATED: Sadie Sink 'Begged' to Play Stranger Things' Max When Casting Team Thought She Was Too 'Old' at 14

Season 4 of Stranger Things aired two parts this past summer — and the fate of Sink's character, Max Mayfield, remains to be seen. Season 4 ended with Max's near-death battle with the show's leading villain, Vecna (Jamie Campbell Bower). Though Max nearly met the same, brutal fate of many of the Hawkins teens, she was saved by Brown's Eleven.

However, the series ended with Max in a coma after she fell from Vecna's grasp with many broken bones and an inability to see.

BROOKLYN, NEW YORK - MAY 14: Sadie Sink attends Netflix's "Stranger Things" Season 4 New York Premiere at Netflix Brooklyn on May 14, 2022 in Brooklyn, New York. (Photo by Theo Wargo/Getty Images)
BROOKLYN, NEW YORK - MAY 14: Sadie Sink attends Netflix's "Stranger Things" Season 4 New York Premiere at Netflix Brooklyn on May 14, 2022 in Brooklyn, New York. (Photo by Theo Wargo/Getty Images)

Theo Wargo/Getty

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Stranger Things has been renewed for a fifth and final season, which has no release date yet. Seasons 1–4 are streaming on Netflix now.