Key Points:
- Milly Alcock, best known for House of the Dragon, is cast as Supergirl in the DC Universe reboot.
- The film Supergirl: Woman of Tomorrow is based on Tom King’s 2022 comic book series.
- Directed by Craig Gillespie, the movie is set for release on June 26, 2026.

Milly Alcock, a rising star in the entertainment industry, has been officially announced as the new Supergirl for the upcoming DC Universe film Supergirl: Woman of Tomorrow. Directed by Craig Gillespie and produced by James Gunn, the movie is an adaptation of Tom King’s celebrated comic series and is set to hit theaters on June 26, 2026.
Milly Alcock Cast as Supergirl

Milly Alcock’s journey to becoming Supergirl began with her breakout role as young Princess Rhaenyra Targaryen in HBO’s House of the Dragon. Her nuanced performance earned her critical acclaim and made her a standout talent in Hollywood. James Gunn revealed that Alcock was his first choice for the role of Kara Zor-El.
Thrilled to see cameras roll at Warner Bros. Studios Leavesden on Supergirl, with Craig Gillespie at the helm and the phenomenal Milly Alcock as our Kara Zor-El. Craig brings an incredible sensibility to this story, and Milly is every inch the unique #Supergirl envisioned by Tom… pic.twitter.com/za9Tr8Vryr
— James Gunn (@JamesGunn) January 23, 2025
Gunn shared his enthusiasm on social media, saying, “Thrilled to see cameras roll at Warner Bros. Studios Leavesden on Supergirl, with Craig Gillespie at the helm and the phenomenal Milly Alcock as our Kara Zor-El.” This revelation has generated immense excitement among fans, who are eager to see Alcock’s portrayal of the beloved superhero.
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About Supergirl: Woman of Tomorrow

The upcoming movie is based on Tom King’s 2022 comic book series Supergirl: Woman of Tomorrow, which redefined the character’s journey. The story revolves around Kara Zor-El’s interstellar quest to bring justice to a young alien girl’s father, who was murdered by Krem of the Yellow Hill. Kara teams up with Ruthye Mary Knolle, a determined and honorable warrior, to track down Krem across the galaxy.
The film will closely follow the comic’s narrative, exploring Kara’s struggles with identity and her quest for justice. Kara Zor-El is depicted as a character of immense strength and resilience, navigating the challenges of being a protector while dealing with her own vulnerabilities. Eve Ridley, known for her role in Three Body Problem, will portray Ruthye Mary Knolle, while Matthias Schoenaerts has been cast as the antagonist Krem.
Craig Gillespie, acclaimed for his work on I, Tonya, brings his directorial expertise to the project. With Ana Nogueira adapting the comic for the big screen, the film promises to stay true to its source material while offering a fresh cinematic experience. James Gunn and Peter Safran, co-CEOs of DC Studios, are producing the film as part of the DC Universe reboot.
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Kara Zor-El: A Legendary Superhero
Kara Zor-El, also known as Supergirl, made her first appearance in Action Comics #252 in 1959. Created by Otto Binder and Al Plastino, Kara is Superman’s biological cousin and shares many of his superhuman abilities. Born on Krypton in Argo City, Kara’s life took a tragic turn when her planet faced destruction. Her parents, Zor-El and Alura, sent her to Earth to be raised by her cousin Kal-El (Superman). However, her journey was delayed, and she arrived on Earth years after Kal had established himself as Superman.
Over the decades, Kara has evolved from a supporting character to a powerful hero in her own right. She has taken on various aliases, including Linda Lee and Linda Danvers, as she balanced her life as a superhero and a regular person. Key story arcs like Crisis on Infinite Earths and her reintroduction in the 2000s have solidified her place in the DC Universe. Kara’s journey is marked by themes of identity, resilience, and the pursuit of justice.
Like her cousin Superman, Kara possesses super strength, flight, heat vision, and enhanced senses. However, her character is distinguished by her emotional depth and unique perspective, often highlighting her struggles with adapting to Earth’s culture and her longing for Krypton.
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Milly Alcock: The Perfect Fit for Supergirl

Milly Alcock was born on April 11, 2000, in Sydney, Australia. She developed a passion for acting at a young age and attended Newtown High School of the Performing Arts before leaving to pursue her career. Alcock gained recognition in Australian television through roles in series like Upright, which earned her an AACTA Award nomination.
Alcock’s portrayal of young Rhaenyra Targaryen in House of the Dragon showcased her acting prowess and ability to convey complex emotions. Her performance garnered critical acclaim and several award nominations, including a Critics’ Choice Television Award for Best Supporting Actress.

The casting of Alcock as Supergirl marks a significant milestone in her career. James Gunn’s confidence in her abilities underscores her potential to bring a fresh and compelling interpretation to the iconic character. Alcock’s background in portraying strong, multifaceted characters makes her an ideal choice for the role.
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First Look and Anticipation
A teaser photo of Milly Alcock as Kara Zor-El was shared by James Gunn, offering fans a glimpse of the upcoming film. While the image does not reveal much about her costume or character details, it has heightened anticipation for the movie. The film is set to premiere on June 26, 2026, as part of the revamped DC Universe timeline.
Before her standalone film, Alcock is expected to debut as Supergirl in Superman: Legacy, releasing on July 11, 2025. This movie will introduce a new Superman while featuring Alcock in a supporting role, setting the stage for her character’s journey.
Source: Deadline
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