ComScore

I Just Realized Why 'Sirens' Star Milly Alcock Looks So Familiar—and I Can't Believe I Didn't See it Sooner

These roles are major

Milly Alcock Netflix Sirens
Courtesy of Netflix

In case you missed it, there’s a show on Netflix that’s been holding onto the #1 spot for weeks. That show is called Sirens, and honestly? I enjoyed it. Sure, not everyone agrees, but it’s got drama, mystery, suspense and just the right amount of comedic relief. But this isn’t a review—let’s talk about the cast.

Sirens stars Julianne Moore, Meghann Fahy and Milly Alcock. If you're anything like me, those first two names rang a bell instantly. I mean, Julianne Moore is a legend (Crazy, Stupid, Love, Still Alice, need I say more?). And Meghann Fahy has been in some faves of mine—The White Lotus, The Bold Type and The Perfect Couple.

Milly Alcock Sirens
MACALL POLAY/NETFLIX

But when it came to Milly Alcock, I had a moment of, “Wait, I know that face.” And if you’ve seen House of the Dragon, you do too. Alcock played young Rhaenyra Targaryen in the HBO hit—yes, that Rhaenyra. She appeared in seven episodes and even earned two Critics' Choice Award nominations for her performance.

House of Dragons Milly Alcock
Ollie Upton / HBO

At just 25, Alcock already has major HBO and Netflix hits under her belt—and she’s not slowing down. She’s set to star in the highly anticipated Supergirl: Woman of Tomorrow, slated for release in 2026, which officially brings her into the DC Comics universe.

And you might not have to wait until then to see her in full superhero mode. According to IMDb, Milly is credited in the upcoming Superman movie, hitting theaters this July.

Before all that, the Australian actress was in a handful of series and projects like Reckoning, Upright and The Familiars—with her first acting credit dating back to 2014.

So yeah, Milly Alcock has been on our screens for a while now—and something tells me this is just the beginning.

Want all the latest entertainment news sent right to your inbox? Click here.



LongHeadshot

Assistant Editor, News and Entertainment

  • Writes breaking news and entertainment content
  • Covers award show red carpets and movie premieres
  • Has earned two Edward R. Murrow Awards