Anyone who saw James Gunn’s “Superman” — and judging by the box-office results, that’s a lot of people — has already seen “House of the Dragon” and “Sirens” star Milly Alcock as Supergirl, who makes a brief appearance at the end of the movie to give her cousin Superman a hard time and to reunite with super-dog Krypto.
Now Gunn has revealed on X another look at Alcock’s Supergirl in the first poster for the upcoming “Supergirl” movie from director Craig Gillespie, which opens in theaters June 26, 2026.
