Milly Alcock Almost Talked Herself Out of Auditioning for ‘Supergirl’ and We’re So Glad She Didn’t
There is something deeply fitting about the fact that the actress now carrying an entire DC franchise on her shoulders very nearly convinced herself not to show up for the audition. Milly Alcock, the 26-year-old Australian who first captured global attention as young Rhaenyra Targaryen in ‘House of the Dragon’, has built her career on a pattern of leaning into discomfort rather than running from it. That instinct, it turns out, is exactly what led her to Kara Zor-El.
After landing her breakout role remotely during the pandemic, Alcock found that the path to ‘Supergirl’ was far more nerve-wracking than anything she had experienced before. She had never tested for a role in person, and when the call came to fly to Atlanta from her family home in Sydney, the sheer scale of what she was walking into hit her hard. The audition took place in January 2024 at Georgia’s Trilith Studios, where James Gunn’s ‘Superman’ was already in production, and the stakes were enormous, with the entire future of a franchise resting on that single room.
It was during that period of weighing whether to even go through with it that Alcock had the moment of clarity now making the rounds. Staring at her own reflection, she gave herself the kind of blunt pep talk that only she could have delivered. “I looked at myself in the mirror, and I was like, ‘Who am I to turn down this opportunity?'” she told Variety. “I knew that it was what I needed to do, because it scared me. And I thought, ‘Well, I get one big, bad, beautiful life. Why not f—ing go for it?'”
That decision to push through paid off in a way she could not have imagined. DC Studios co-CEO Peter Safran recalled the moment she walked in and performed, saying that everybody had tears in their eyes and that she wears her heart on her sleeve, bringing so much emotion to the role. Safran added that the room collectively agreed she was absolutely perfect and exactly what they wanted. Screenwriter Ana Nogueira, who had watched countless talented actresses come through the door, put it even more simply, saying Alcock was simply the girl for the part.
The road to that audition room was not a straight one. After her season on ‘House of the Dragon’, Alcock had actively sworn off large franchises, only to spend an entire year struggling to find work and fearing her career had already peaked. She later told Variety that she had been terrified her life was over at just 22, and that it was ultimately that fear which pushed her to, as she put it, bully herself into auditioning.
‘Supergirl’, her first film role, is directed by Craig Gillespie and written by Ana Nogueira, and marks the next major chapter in James Gunn and Peter Safran’s rebooted DC Universe following the success of ‘Superman’. That first DCU film crossed more than 600 million dollars at the global box office, a promising but not overwhelming start that places considerable weight on ‘Supergirl’ to push the new universe forward. Alcock is also confirmed to return as Kara in Gunn’s second Superman film, ‘Man of Tomorrow’, scheduled for release in 2027.
What makes the whole arc so compelling is how deeply personal the journey to Kara turned out to be. Alcock has spoken about how her own internal experience while making the film mirrored Kara’s, a pattern of wanting to hide and run away before finally having to face herself, and finding unexpected confidence on the other side of that fear. For an actress who once washed dishes in a Sydney cafe and auditioned from her mother’s attic, the mirror moment she described feels less like a movie anecdote and less like a coincidence.
Now that ‘Supergirl’ has landed in theaters, the question on everyone’s mind is whether Alcock’s leap of faith paid off on screen as much as it did in the audition room, so share your thoughts in the comments on whether she won you over as Kara Zor-El.
