Don't miss the 'Tickets Available Now' Trailer for Supergirl, an upcoming DCU film starring Milly Alcock in the dual role of Supergirl/Kara Zor-El. Tickets are available now for Supergirl, in theaters and IMAX on June 26. When an unexpected and ruthless adversary strikes too close to home, Kara Zor-El, aka Supergirl, reluctantly joins forces with an unlikely companion on an epic, interstellar journey of vengeance and justice. Craig Gillespie directs the film from a screenplay by Ana Nogueira.