Some people go vegan because of a documentary. Sadie Sink went vegan because of a sleepover.
In 2016, at 14, she filmed The Glass Castle alongside Woody Harrelson, Hollywood’s most durable plant-eater. Somewhere in there came a three-day stay with his family, all of them vegan, and the realization that changed her kitchen forever: “By spending time with them, I was able to learn that a vegan lifestyle is totally doable and it’s not as hard as it may seem.”
She never went back. Ten years, one Stranger Things era, a Tony nomination and a Spider-Man casting later, she’s still one of the cleanest vegan records in young Hollywood.
QUICK ANSWER
Yes, Sadie Sink is vegan, since 2016, when she was 14. The evidence is as fresh as it gets: PETA featured her on its January 2026 vegan celebrities list, quoting her line that she went vegan “solely because of the animals”.
Last fact-checked: July 7, 2026
For the animals, full stop
Plenty of celebrity vegans arrive via health kicks and stay for the ethics. Sink skipped straight to the point, as PETA quotes her: “I went vegetarian and then vegan solely because of the animals. That is kind of the most obvious reason for me.”
Her advice to anyone starting out is the least preachy in this entire series, from her Glamour interview: “It can be pretty intimidating at first, but just take it day by day. Every little choice counts!”
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The Texas-born Broadway kid drops meat as a first step.
2016: The Glass Castle and the Harrelson sleepover
Filming with Woody Harrelson, plus three days with his fully vegan family, convinces the 14-year-old it's “totally doable”. Fully vegan since.
2016 to 2025: Max Mayfield, powered by plants
Her entire Stranger Things run, skateboard and all, happens on a vegan diet.
2021: Stella McCartney's mushroom bags
She fronts a campaign for the designer's animal-free line, including mycelium leather bags. Vegan fashion, main stage.
2025: Tony nomination, Spider-Man casting
Broadway acclaim for John Proctor Is the Villain, then a role alongside Tom Holland in Spider-Man: Brand New Day.
January 2026: PETA's list
Featured on PETA's “Vegan Celebrities to Inspire You in 2026”, the freshest confirmation available.
The Harrelson effect
There’s something poetic about the chain of influence here. A stranger on a bus told 24-year-old Woody Harrelson to quit dairy in 1985. Thirty years later, Harrelson’s family did the same for a teenage co-star over three days of normal family life. No lectures, no pamphlets, just proof that it works. We wrote up Woody’s full story here, and if the pattern holds, someone on the Spider-Man set should be going vegan around 2027.
Speaking of which: Spider-Man is quietly the most vegan franchise in Hollywood. Tobey Maguire has been meat-free since 1992. Her favorite documentary, for the record: Blackfish.
Fact or fiction?
Woody Harrelson convinced her to go vegan. Fact or fiction?
Fact. Filming The Glass Castle plus a three-day stay with his vegan family did it. She was 14.
She modeled real leather for a fashion campaign. Fact or fiction?
Fiction. The opposite: she fronted Stella McCartney's animal-free campaign with mushroom-leather bags.
She went vegan for health reasons. Fact or fiction?
Fiction. Her words: “solely because of the animals.”
Quiz: how well do you know vegan Sadie?
Five questions, no cheating
1. Which co-star inspired her to go vegan?
2. How old was she when she went vegan?
3. What's her favorite documentary?
4. Which designer's animal-free campaign did she front?
5. What sealed the deal during The Glass Castle?
Is Sadie Sink still vegan in 2026?
Yes, with January 2026 PETA confirmation, which is about as fresh as celebrity vegan evidence gets. Ten years in at age 24, with a Stella McCartney campaign and a West End Juliet on the resume, hers is the record most likely on this whole list to hit the 50-year mark someday.
Woody Harrelson convinced her to go vegan. Fact or fiction? Fact. Filming The Glass Castle plus a three-day stay with his vegan family did it. She was 14. She modeled real leather for a fashion campaign. Fact or fiction? Fiction. The opposite: she fronted Stella McCartney's animal-free campaign with mushroom-leather bags. She went vegan for health reasons. Fact or fiction? Fiction.
Is Sadie Sink still vegan in 2026?+
Yes, with January 2026 PETA confirmation, which is about as fresh as celebrity vegan evidence gets. Ten years in at age 24, with a Stella McCartney campaign and a West End Juliet on the resume, hers is the record most likely on this whole list to hit the 50-year mark someday. More vegan celebrity checks: Is Woody Harrelson vegan? The man who started her story Is Tobey Maguire vegan?
Veganism, animal welfare, climate, sustainability and wildlife, everything on our minds, lives on Plantbased, our podcast. We talk to people who have something to say and who show, through how they live, what's possible. Also a video podcast on YouTube.
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