Spider-Man 4 set photos spark speculation over Sadie Sink possibly playing Gwen Stacy

Set photos from Spider-Man: Brand New Day lead fans to suspect Sadie Sink may portray Gwen Stacy in MCU.

Newly surfaced set photos from Spider-Man 4, officially titled Spider-Man: Brand New Day, have fueled fan speculation about who actress Sadie Sink might be portraying in the upcoming Marvel Cinematic Universe film. The movie, a collaboration between Marvel Studios and Sony Pictures, is currently in production and will see Tom Holland reprise his role as Peter Parker/Spider-Man, alongside returning cast members Zendaya as Michelle “MJ” Jones-Watson and Jacob Batalon as Ned Leeds.

First Potential Look at Sadie Sink on the Set of Marvel’s Spider-Man: Brand New Dayhttps://t.co/LVigfzJDgf

— Maxblizz.com (@Maxblizz) August 12, 2025

Blonde? She is gwen

— John Kramer (@John_Kramer741) August 12, 2025

The one dressed like Gwen lol

— George Anagnostopoulos (@CoachAgno) August 12, 2025

While Marvel has not confirmed Sink’s character, images shared on social media appear to show someone resembling the Stranger Things star with blonde hair on set. This has led many fans to suggest she could be playing Gwen Stacy, a well-known character from the Spider-Man comics. However, others remain unconvinced the person in the photos is actually Sink, and there is no official confirmation that Gwen Stacy will appear in the film. Plot details for Spider-Man: Brand New Day remain under wraps.

Sink is not the only new addition to the cast whose role has yet to be revealed. Liza Colón-Zayas, known for The Bear, has also joined the project in an undisclosed part. The film will also feature Jon Bernthal returning as Frank Castle/The Punisher, Mark Ruffalo reprising his role as Bruce Banner/The Hulk, and Michael Mando returning as Mac Gargan/Scorpion, a character last seen in Spider-Man: Homecoming (2017).

Directed as part of Marvel’s Phase 6, Spider-Man: Brand New Day is scheduled to release in U.S. theaters on July 31, 2026. It will be followed later that year by Avengers: Doomsday on December 18, with Avengers: Secret Wars set for release on December 17, 2027.