Today, March 31 is the anniversary of the release of “Action Comics #252”, the first appearance of Supergirl back in 1959.
To celebrate the anniversary, DC Studios co-CEO James Gunn posted a photo of Milly Alcock reading a copy of the hardcover release of the “Supergirl: Woman of Tomorrow” comic book story.

“Today we celebrate Supergirl and all her various incarnations. Can’t wait for you to see the latest version, portrayed by the indomitable Milly Alcock, in June 2026.”
Photo by Parisa Taghizadeh.
Production on the “Supergirl: Woman of Tomorrow” movie started in London, England earlier this year.
Supergirl, played by “House of the Dragon” breakout Milly Alcock, will also star Eve Ridley as Ruthye Mary Knolle, Matthias Schoenaerts as Krem of the Yellow Hills, David Krumholtz as Zor-El, Emily Beecham as Alura, with Jason Momoa making an appearance as Lobo.
DC Studios has set a June 26, 2026 release date for “Supergirl: Woman of Tomorrow.”