Casting directors almost passed on her. What the 14 year old did next led to Max, Broadway, and a Marvel superhero role.
You saw the setup on Facebook. In September 2016, a 14 year old from Texas auditioned for a new role on Netflix’s Stranger Things.
The part was Max Mayfield, a tough new girl in town. Then the casting team gave her the bad news: they thought she was too old.
For most teenagers, that’s where the story ends. Sadie Sink wasn’t most teenagers.
She Refused to Walk Away
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Sadie didn’t pack up and go home. She “begged and pleaded,” as she later put it, for more scenes to read. She wanted a chance to show them something new.
It worked. She was called back four times.
One of those callbacks was a chemistry read with Gaten Matarazzo and Caleb McLaughlin, who play Dustin and Lucas. Co-creator Matt Duffer later called casting her “a bit of a no-brainer.”
She’d made it through. But there was one small problem she hadn’t told anyone about.
The Little White Lie
During auditions, Sadie said she had rollerblading experience. She didn’t.
She later admitted it on Jimmy Kimmel Live. She learned she’d won the part during speech and debate practice at school.
The next day, a skateboard showed up at her house. Max skates everywhere, and now Sadie had to learn fast.
She did. But why did a 14-year-old fight so hard for one role? The answer goes back to a small town in Texas.
A Texas Theater Kid
Sadie Elizabeth Sink was born on April 16, 2002, in Brenham, Texas. Her mom, Lori, taught math. Her dad, Casey, coached football.
She grew up with three older brothers. She started community theater at age 7, in The Best Christmas Pageant Ever.
By 9, she was performing at Houston’s Theater Under the Stars. In 2012, she played the title role in Annie there.
Later that year, at age 10, she was cast in the Broadway revival of Annie. She started as a standby, ready to step into several roles at a moment’s notice.
In late July 2013, she got the lead. She shared the title role until the show closed in January 2014.
In 2015, she was back on Broadway in The Audience, playing a young Queen Elizabeth II opposite Helen Mirren. She was 13.
So by the time someone called her “too old,” she had already been working on Broadway for years. She knew how to fight for a part.
The Song That Changed Everything
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Max first appeared in Season 2 in 2017. But Season 4 in 2022 is when the world fell for her.
In one storyline, Max is haunted by grief and hunted by the villain Vecna. Her lifeline is her favorite song, Kate Bush’s 1985 hit “Running Up That Hill.”
Fans were floored. The song shot back up the charts 37 years after it first came out.
It hit No. 1 in the UK, the first time it had ever topped the chart there. In the US, it climbed to No. 3 on the Billboard Hot 100. Back in 1985, it had peaked at No. 30.
A teenage actress had helped make a 1980s song a hit with a whole new generation. And the offers were about to start coming in.
The Woman Who Wouldn’t Make It Without Her
Here’s something most fans don’t know.
In 2021, Taylor Swift wrote and directed All Too Well: The Short Film. She cast Sadie opposite Dylan O’Brien.
Swift later said she wouldn’t have gone ahead with the film if Sadie had said no. Three years earlier, Sadie had nearly been turned away for being “too old.” Now one of the biggest stars in the world was saying it was her or nobody.
In 2022, she played a struggling teenager in Darren Aronofsky’s The Whale, opposite Brendan Fraser. The role earned her a Critics’ Choice nomination.
There’s a family secret in there too. Her younger sister, Jacey, played the younger versions of Sadie’s characters in both Stranger Things Season 3 and The Whale.
Movies were going well. But Sadie still missed the stage.
Back on Broadway, and a Tony Nod
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In 2025, Sadie went back to Broadway in John Proctor Is the Villain. She played Shelby Holcomb, a high school student at the center of a classroom fight over The Crucible.
She has admitted she was nervous about going back after so many years on camera. It paid off.
She earned her first Tony nomination, for Best Leading Actress in a Play. She grew up watching the Tonys every year, and she has said a nomination was the ultimate honor to her.
She didn’t win. The award went to Sarah Snook. But a nomination at 23 put her in serious company.
Then she flew to London. There was a secret role waiting.
From Max to Jean Grey
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On December 31, 2025, the Stranger Things finale aired. Sadie had played Max for nearly ten years.
Seven months later, the rest of the story came out.
Spider-Man: Brand New Day hit theaters on July 31, 2026. For over a year, Marvel had kept Sadie’s role a secret. Trailers showed her only in shadow, under a hood.
The fan rumors turned out to be true. She plays Jean Grey, the powerful telepath from the X-Men.
She’s set to play the role again in Avengers: Secret Wars in 2027.
And in March 2026, she made her London stage debut as Juliet in Romeo & Juliet at the Harold Pinter Theatre.
The girl who was “too old” to play a 13 years old was now playing Shakespeare’s most famous heroine and one of Marvel’s most famous heroes.
The Lesson in the Audition Room
One “no” almost ended it all before it started. Sadie Sink didn’t argue, and she didn’t give up. She asked for one more chance to prove herself.
Sometimes the door isn’t closed. It’s just waiting for you to knock again.
