Legacy introducing Milly Alcock as the latest live-action Supergirl, now is the perfect time to look back at all the actresses who have donned the cape.

James Gunn, the head of DC Studios and director of "Superman," revealed the first look at the new "Supergirl" movie — with a warning.

Hot off the heels of the blockbuster success of Superman, DC Studios is ready to introduce us to another child of Krypton already. After tiny teases throughout its production, we have our first proper look at Milly Alcock’s Supergirl.

Supergirl's first poster has been unveiled by DC Studios co-head James Gunn ahead of the movie's June 2026 release.

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.

Milly Alcock is known for her portrayal in House of the Dragon. She has recently made a brief appearance in David Corenswet's Superman Kara Zor-El, cousin of Kal-El aka Clark Kent.

Superman director and co-head of DC Studios James Gunn shared as much on Wednesday, July 16 when he posted a photo on Twitter/X of the heroine sipping a blue slushy to promote the upcoming Supergirl film. Playing off marketing for Superman, which encouraged audiences to "Look Up," Gunn, 58, captioned the photo "Look Out. 2026."

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First shared by co-department head of hair Lindsay McAllister on Instagram and now available all over the internet, the behind-the-scenes image shows Alcock getting ready to film her first-ever scene as Kara Zor-El. The original post was deleted, but luckily for us Discussing Film reposted it for everyone to see (you can check out the image below).