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James Gunn sparks new wave of fan excitement over Milly Alcock’s performance in Supergirl: ‘she’s absolutely stunning’

By Tom Power

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James Gunn sparks new wave of fan excitement over Milly Alcock's performance in Supergirl: 'she's absolutely stunning'

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James Gunn sparks new wave of fan excitement over Milly Alcock’s performance in Supergirl: ‘she’s absolutely stunning’

11 September 2025

Shhh, nobody tell David Corenswet!

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Supergirl’s first film in over 40 years is due out next June
(Image credit: DC Studios)

James Gunn has lavished praise on Milly Alcock’s performance in Supergirl
The DC Studios co-chief says it “might be best bit of casting… I’ve ever done”
Supergirl will take flight in theaters in June 2026

James Gunn has sparked a fresh wave of excitement over next year’s Supergirl movie after claiming Milly Alcock was tailor-made to portray the eponymous hero.

Discussing the DC Universe (DCU) movie on the September 10, 2025 edition of The Howard Stern Show, Gunn lavished praise on Alcock for her performance as the titular Kryptonian. Indeed, Gunn called her portrayal of Kara Zor-El “absolutely stunning” and even went as far as to suggest that Alcock’s hiring is the crowning achievement of Gunn’s career from a casting perspective.
“Supergirl is… being edited right now,” Gunn said of the DCU Chapter One film’s current production status, before adding: “The movie is coming out fantastic. Milly Alcock, who plays Supergirl, might be the best bit of casting I think I’ve ever done in my entire life. She’s absolutely stunning in the movie.”

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Alcock was officially announced as the DCU’s Kara Zor-El in January 2024 (Image credit: James Gunn/Twitter)
High praise, indeed, Mister Gunn. Sure, if you want to be really cynical about it, you might view Gunn’s comments as a way of hyping up one of 2026’s new movies. Talking up the performance of a movie’s lead star is a sure fire way to further generate interest in the flick and ensure it’s on people’s radars so they check it out as soon as it’s flown into theaters.

I think Gunn genuinely believes that Alcock’s casting as Kara Zor-El is one of those lightning in a bottle moments, though – and her scene-stealing cameo in Gunn’s Superman movie is all of the proof I need. Indeed, I only needed to see 30 seconds of Superman to have full confidence in Supergirl, so I’ll be seated day one for the second DCU film that’ll be released on the big screen.
I’m not the only one who thinks that, either. Over on the DC Cinematic sub-Reddit, a thread about Gunn’s lauding of Alcock’s performance is full of fans expressing excitement for her portrayal of Kara and the movie’s eventual release. I’m glad I’m not the only one who can’t wait to see more, then!

Supergirl’s first poster features a rebellious spin on Superman’s ‘Look Up’ tagline (Image credit: DC Studios/James Gunn)
Gunn’s latest comments aside, we’ve learned quite a bit about Supergirl – over the past three months.

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For one, it’s no longer called Supergirl: Woman of Tomorrow, with Gunn revealing why the DC comic book movie’s title was changed in early June. Weeks later, Gunn explained why Jason Momoa’s Lobo is a vital part of Supergirl’s story and confirmed which actor would play the film’s villain.
Days after Superman’s release, the first poster for Supergirl revealed a near-full look at the DC superhero’s outfit in what will be her first big-screen adventure for over 40 years. And, most recently, Gunn dropped a major hint at Supergirl’s age rating, which isn’t far off what I expected it to be.
Supergirl will be released in theaters worldwide on June 26, 2026. For more on the Alcock-led comic book film, check out my dedicated guide on Supergirl.
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Senior Entertainment Reporter

As TechRadar’s senior entertainment reporter, Tom covers all of the latest movies, TV shows, and streaming service news that you need to know about. You’ll regularly find him writing about the Marvel Cinematic Universe, Star Wars, Netflix, Prime Video, Disney Plus, and many other topics of interest.

An NCTJ-accredited journalist, Tom also writes reviews, analytical articles, opinion pieces, and interview-led features on the biggest franchises, actors, directors and other industry leaders. You may see his quotes pop up in the odd official Marvel Studios video, too, such as this Moon Knight TV spot.

Away from work, Tom can be found checking out the latest video games, immersing himself in his favorite sporting pastime of football, reading the many unread books on his shelf, staying fit at the gym, and petting every dog he comes across.

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