After an uncredited mid-credit cameo in Superman (2025), Alcock, 26, is rocking her own suit and cape as fellow Kryptonian Kara Zor-El again in Supergirl (2026).
Prior to her casting as Clark Kent's cousin in the DC Universe, Alcock had a major breakout thanks to House of the Dragon. The Game of Thrones prequel was a smash, and her performance as the young Rhaenyra Targaryen was critically acclaimed. She followed it with the Netflix dramedy miniseries Sirens, once again being lauded for her portrayal of "broken Barbie doll" Simone.
Milly Alcock as Supergirl/Kara Zor-El in "Supergirl" (2026)DC Studios
"My personal experience of being Milly mirrored Kara’s experience, which was ‘Hide. Run away. Pretend it’s not happening,'" she recalled to Variety. "And then you have to face it to heal a part of yourself that you’ve been neglecting."
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Is Milly Alcock in Upright?
Tim Minchin as Laclan "Lucky" Flynn and Milly Alcock as Meg Adams in "Upright"Foxtel
"I knew that this opportunity would be so much more of a valuable experience than getting my piece of paper," she told Vogue Australia. "I never doubted it for a second. I was almost too impulsive. I was like: 'No, this is what I've been working towards and I've been given this amazing opportunity with this amazing cast, with this beautiful script.' I couldn't say no and I couldn't let the fear and anxiety of not finishing school haunt me, because that would have defeated the whole purpose of leaving."
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Is Milly Alcock in a relationship?
Milly Alcock and Jo Powell at the EE BAFTA Film Awards on Feb. 22, 2026Photo by Dave Benett/BAFTA on Getty Images
The pair reportedly live together now and met at a karaoke bar during a rendition of "Bohemian Rhapsody" by Queen, per Stylist, so we know these two have great taste (and, perhaps, a lot of confidence in their respective vocal ranges).
View this post on InstagramWhy does Milly Alcock look so different?
Alcock is no longer playing young Rhaenyra Targaryen, and like Emma D'Arcy, who played the older version of the character (not to mention Game of Thrones star Emilia Clarke), the white-blonde wig and accompanying makeup makes a huge difference in Alcock's appearance. As such, some fans didn't realize that our Supergirl is the same as the erstwhile Queen of Dragons.
Alcock has previously spoken about having attention deficit hyperactivity disorder (ADHD).
Did Milly Alcock live in an attic?
Alcock previously lived in an attic at her family home in Sydney. While it sounds like it would've perhaps been cramped and cobweb-infested, it's actually a pretty sweet space.
Today, Alcock reportedly lives in London.
Is Milly Alcock a smoker?
"I couldn't stop shaking. I was mortified," she told Flaunt. "I have only done Australian TV, which is substantially different from anything of this world. I remember it was a scene at the end of the first episode. I remember going for action and thinking, 'This is the first take that is going to change your life.' I was so anxious and tense. I went out for a cigarette and calmed down. You get so excited to work and your body physically reacts, and that inhibits you from doing your job because you want to be relaxed and not skittish."
Does Milly Alcock have a husband?
Alcock is not married as of this writing in June 2026.
Alcock reportedly lives in London now, but previously lived in an attic in her family home while working to break into stardom.
Who has Milly Alcock dated?
The only publicly confirmed relationship we know of that Alcock has had is with Powell.
Fabien Frankel and Milly Alcock at the "House of the Dragon" premiere on July 27, 2022Photo by Michael Buckner on Getty Images
Fans also assumed that Alcock dated Luca Ward and Ari Kwasner-Catsi, but those situations were never confirmed, either, and could very well simply be cases of strangers making assumptions about a woman existing in the same space as a man at the same time.
What did Milly Alcock say about Christians?
Alcock never actually said anything about Christians. She did, however, point out some hypocrisy in the types of men who troll her online.
The point, for those of you with little to no critical thinking or reading comprehension skills (it's OK, we'll work with you!), is that those calling themselves Christian dads aren't acting very Christ-like and are setting poor examples for their children. If this still upsets you, try some introspection to figure out why.
Alcock's natural hair color appears to be either dark blonde or light brown, based on photosof her as a child. Because she started acting when she was quite young, it's unclear whether her hair color was altered at those times for a role (like when her hair was dark brown in The Reckoning, for example), but her roots are generally in the same range today. She definitely, though, is not nearly as blond as her former character Rhaenyra Targaryen!
Why did Milly Alcock get replaced?
Alcock is Australian.
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Who does Milly Alcock look like?
Will Poulter in January 2026Photo by Mat Hayward on Getty Images
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"I think I got my interest in acting because everybody was uninterested in acting," Alcock previously told Vogue Australia. "I grew up in a predominantly rugby union household; it doesn't make any sense."
What is Milly Alcock best known for?
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How old is Milly Alcock now?
Born on April 11, 2000, Alcock is 26 years old as of this writing in June 2026.
How old was Milly Alcock in House of the Dragon?
Milly Alcock as Rhaenyra Targaryen in "House of the Dragon"HBO
"Hollywood has set up this ideal where people who are between aged 17 and 18 look like they’re 25, which is just not true," she said. "So we've kind of been conditioned to think that if you’re a certain age you have to look a certain way, which is not the case for a lot of people. Looking younger is bittersweet. It does have its advantages, but it also has disadvantages, because people treat you like you’re younger and sometimes don't give you the same respect in that regard."
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