Earlier this week, Muschietti himself teased the costume on his social media profiles, and then some set video showed Supergirl in action, but it wasn’t clear if it was Calle or her stunt double.
Kiersey Clemons is also reprising her role as Iris West from Zack Snyder’s Justice League, and Maribel Verdú and Ron Livingston are playing Nora and Henry Allen.
“So I don’t know how possible it is, but I do know it’s not impossible because we proved it in Crisis when we saw the two Flashes together,” CW’s The Flash producer Eric Wallace previously told Discussing Film.