Sadie Sink leads U.S. Instagram growth amid Marvel casting

Sadie Sink has seen a significant surge in social media presence and fashion visibility following her casting as Jean Grey in the Marvel Cinematic Universe. After debuting in ‘Spider-Man: Brand New Day’, Sink appeared at Disney’s D23 Expo to promote the upcoming ‘X-Men’ film, which is scheduled for release on May 5, 2028.

This momentum contributed to Sink leading the list of the fastest-growing U.S. Instagram accounts in August 2026, gaining approximately 2.1 million followers. Her increased profile coincides with her role in Calvin Klein’s Fall 2026 ‘Feel the Fit’ denim campaign, directed by Aidan Zamiri.

Other notable growth on Instagram during the same period included Inde Navarrette, following her reveal as Rogue, and Robert Downey Jr., following Marvel’s showcase of ‘Avengers: Doomsday’ at D23. The second fastest-growing account was the late Dolly Parton, following her death on August 25.