Australian 'House of the Dragon' Star Milly Alcock Has Just Been Cast as the New Supergirl

After stepping into Rhaenyra Targaryen's shoes in the 'Game of Thrones' prequel, the Aussie actor is now becoming the Woman of Steel.
Sarah Ward
Published on January 30, 2024

2022 was a huge year for Milly Alcock, with House of the Dragon bringing her into the Game of Thrones realm and Australian series Upright returning for its second season. Just a month into 2024, this year is already proving massive for the Aussie actor as well. After stepping into Rhaenyra Targaryen's shoes, Alcock is now becoming the Woman of Steel in upcoming DC Universe film Supergirl: Woman of Tomorrow.

Filmmaker James Gunn, who is DC Studios' co-CEO and co-chairman — and, before getting those roles, directed The Suicide Squad — has confirmed that the Aussie talent is taking on the lead part in the upcoming flick.

"Milly is a fantastically talented young actor, and I'm incredibly excited about her being a part of the DCU. Yes, I first became aware of her in House of the Dragon, but I was blown away by her varied auditions and screen tests for Supergirl," Gunn posted on social media after reports of Alcock's casting started circulating.


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If you're looking for more details about Supergirl: Woman of Tomorrow, however, little else has been revealed as yet — including who else is starring, the filmmaker behind the lens and when the movie will arrive. Under Gunn and fellow co-head honcho Peter Safran (who was a producer on The Suicide Squad), all things DC on-screen are currently undergoing a shakeup. The DC Extended Universe is over, wrapping up with Aquaman and the Lost Kingdom, with the new DCU taking the company's movies in a fresh direction instead.

In 2025, the Gunn-helmed Superman: Legacy will kick off the reborn franchise, starring Pearl's David Corenswet as the eponymous figure and The Marvelous Mrs Maisel's Rachel Brosnahan as Lois Lane. After that will come The Authority, focusing on a team of WildStorm characters; The Brave and the Bold, the DCU's first Batman and Robin flick; Supergirl: Woman of Tomorrow, as now starring Alcock; and Swamp Thing.

Alongside House of the Dragon and her AACTA-nominated performance in Upright, Alcock's resume includes Australian shows such as Wonderland, Janet King, A Place to Call Home, Pine Gap, Fighting Season and Les Norton.

As Kara Zor-El in Supergirl: Woman of Tomorrow, she'll take on a figure also played by Helen Slater (Chantilly Bridge) in 1984's Supergirl film, Sasha Calle (The Young and the Restless) in 2023's The Flash, Laura Vandervoort (Sullivan's Crossing) in TV's Smallville and Melissa Benoist (Clerks III) in the Supergirl television series.

There's no sneak peek at Supergirl: Woman of Tomorrow yet, obviously, but you can check out the trailers for House of the Dragon season one and Upright season two below:

Supergirl: Woman of Tomorrow doesn't yet have a release date — we'll update you when one is announced.

Read our interview with Milly Alcock about House of the Dragon and Upright.

House of the Dragon images: HBO.

Published on January 30, 2024 by Sarah Ward
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