Milly Alcock is one of the most exciting young actors, and new data aboutSirensproves her worth as a TV star. Alcock broke big with her role as the younger version ofRhaenyra Targaryen inHouse of the Dragonseason 1, and theGame of Thronesprequel show only launched her into further success.
Theyoung actress has recently received buzz for her upcoming role as Supergirl in the new DCU film franchise, but she’s had an active year in the limelight prior to that. Her role in thecast ofSirensbrought her acclaim, and it has continued to find success with viewers.
After Only 1 Month, Milly Alcock’s Sirens Became The 8th Most-Watched TV Show On Netflix This Year (So Far)
Sirens Has Already Accumulated Astounding Viewership Numbers
Sirenswas released in late May 2025, andin just one month of recorded data, it became the 8th-most-watched TV show on Netflix this year. Netflix released data reports covering January through June 2025. ConsideringSirensonly had one month to accumulate those numbers, it’s extremely impressive.
Some of the other TV shows ahead of it had several months' worth of data to pull from, including juggernauts likeSquid Gameseason 2 and the surprise phenomenon ofAdolescence.Sirensearned 252,300,000 hours viewed during that time, with a total of 53,300,000 views. It’s safe to say it’s only added more since.
Sirensearned 252,300,000 hours viewed during that time, with a total of 53,300,000 views.
While the #8 position for a half-year period still might not sound like the most impressive statistic, it’s worth noting that this is Netflix. Even with several new streaming services creating competition, Netflix is still king, and the #8 show on the original streamer platform is likely still near the top altogether.
It’s Looking Unlikely That Milly Alcock Will Have Another Great TV Show To Follow Up Sirens & HOTD Anytime Soon
Milly Alcock Is About To Be Busy Saving Lives As Supergirl
Although Milly Alcock has solidified herself as a TV all-star in the early years of her career, it might be her last go-around on the small screen for a while. WithSupergirlcoming out in 2026 and no other projects on the way,it looks like movie stardom and other projects related to the DC Universe might consume her next few years.
With the tremendous success of James Gunn’sSuperman,there’s already a ton of hype for Milly Alcock’sSupergirlmovie. It seems much less likely that we’ll see her do anything similar toSirensorHouse of the Dragonon the TV landscape unless it’s related to the DCU or just more minor guest/cameo roles.
She already had acameo appearance onHouse of the Dragonseason 2, and with actors like Isabela Merced and Nathan Fillion set to appear inPeacemakerseason 2,TV cameos from Supergirl could be expected. With how good she was inSirens, though, it’s disappointing that there might not be anything like it for a while.
