Many of us were first introduced to Milly Alcock as Princess Rhaenyra in the Game of Thrones spin-off series, House of the Dragon. But this summer, she takes flight in the upcoming Supergirl, which is bound to launch her into a whole other stratosphere of fame. Of course, when her casting as the second-most famous Kryptonian was announced, there was online backlash, which the actress says she learned to deal with thanks to her time on HotD.
Ahead of the 2026 calendar release of one of the most anticipated new superhero movies, Milly Alcock sat down with Vanity Fair for a wide-ranging interview, touching on how her time in the world of Westeros made her swear off big franchises. However, after a year without work, she became nervous that her career was stalling, and then Supergirl was offered to her. But is she primed for the inevitable backlash that comes with such a major project? She explains how GoT taught her what to expect:
It definitely made me aware that simply existing as a woman in that space is something that people comment on. We have become very comfortable having this weird ownership of women’s bodies. I can’t really stop them. I can only be myself.
For the Sirens star, moving from House of the Dragon, a role she's famously spoken about her struggles with starring in, to taking on a major new DC movie as the headlining superhero has brought a ton of anxiety. According to her, she has been having “crazy dreams,” imagining herself at the “foot of a tsunami,” as her first major motion picture appearance as Kara Zor-El gets closer to release. Of course, she wants the movie to be well received, but she is preparing herself for the title wave of outspoken members of the fandom who aren’t so keen on her or her take on the character.
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Alcock’s take on how entertainment audiences feel emboldened to speak about women’s bodies is very similar to Sydney Sweeney's description of how she dealt with people feeling comfortable talking about her body a few years ago. And much like the Upright actress, Sweeney explained the odd feeling of having no control over how viewers perceive or respond to her. The only thing she can control is her choices in work.
Like Sweeney, the Australian-born star is focusing on her next career moves and approaching each project with intent. Beyond Supergirl, she has an amazingly diverse slate of projects on the horizon. These include Thumb, a comedy about a severed (you guessed it) thumb, featuring Sofía Vergara and Kate McKinnon. Plus there's Hot Mother, which tells the story of a mother (Toni Collette) and daughter (Alcock) trapped in a sauna at a remote wellness spa. With these projects lined up after her superhero debut, she already has her sights set on where she’d like to go next:
I want to work with a bunch of really cool young women…Rachel Sennott is fucking fab. She’s pioneering the Gen Z voice at the moment. I’m excited to see how this generation reflects our insidious day-to-day relationship with the internet and parasocial relationships.
The Game of Thrones franchise is world-famous, and its first major spinoff made Milly Alcock a familiar face to anyone with an HBO Max subscription. But, with Supergirl soon to hit theaters, she’s preparing to take on the spotlight in a way she didn't set out looking for. Luckily, it seems she has a solid head on her shoulders and is prepared to face that online backlash, no matter how undeserved it may be, head-on.
Supergirl lands in theaters on June 26, 2026. As expectation builds, all eyes are on Milly Alcock and how she will bring this iconic character to life in her biggest role yet.
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