The character Holly Wheeler in Stranger Things Season 5 is canonically around 9 to 10 years old, according to the show's timeline and dialogue in Episode 4. Although the timeline might suggest she should be about 7 years old based on the series setting, the show aged her up to fit her expanded role. The actress Nell Fisher, who portrays Holly in Season 5, is 14 years old in real life, which is older than the character's age but reflects the production choice to cast an older child actor for the role.