Milly Alcock: From House of the Dragon to DC’s Supergirl
Rising Star Takes on Iconic Role
Milly Alcock stars as Kara Zor-El in the superhero film following her cameo in 2025’s Superman. The 25-year-old Australian actress has quickly become one of Hollywood’s most sought-after stars, transitioning from her breakout role in HBO’s House of the Dragon to leading DC Studios’ latest blockbuster.
DC Studios released a teaser for Supergirl ahead of the full trailer reveal on Thursday, December 11. The anticipation surrounding this project highlights Alcock’s meteoric rise in the entertainment industry and marks a significant milestone in her burgeoning career.
A Journey from Sydney to Superstardom
Alcock gained wider recognition for starring as young Rhaenyra Targaryen in the HBO fantasy series House of the Dragon (2022–2024), for which she was nominated for a Critics’ Choice Television Award for Best Supporting Actress in a Drama Series. Before her international breakthrough, the Australian actress honed her craft in local television, including her critically acclaimed performance in the comedy-drama Upright.
Her breakout role was in Upright as Meg, a runaway teenager. For her portrayal, she won the Casting Guild of Australia’s 2018 Rising Star Award. This early recognition demonstrated her natural talent and dedication to the craft, setting the stage for larger opportunities.
Supergirl: Woman of Tomorrow
Supergirl is directed by Craig Gillespie and written by Ana Nogueira. The movie adapts the acclaimed comic book miniseries Supergirl: Woman of Tomorrow by Tom King and Bilquis Evely. This adaptation promises a fresh take on the iconic character, diverging from traditional portrayals with a grittier, more mature approach.
The synopsis reveals: “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.” Supergirl features the first theatrical adaptation of Lobo, with Jason Momoa bringing the intergalactic bounty hunter to life.
Significance for Audiences
The film launches theatrically on June 26, 2026. For fans and audiences, Milly Alcock’s Supergirl represents a new era of superhero storytelling within the rebooted DC Universe. Her casting demonstrates DC Studios’ commitment to discovering fresh talent whilst honoring beloved comic book characters.
James Gunn praised her: “Milly brings this raw, unfiltered energy that’s perfect for Kara—she’s not just playing a hero; she’s living the isolation and fire of it.” As the DC Universe continues to expand, Alcock’s performance may well define Supergirl for a new generation of audiences, cementing her status as one of cinema’s most exciting emerging talents.