Box office numbers for Supergirl look bleak after lead star Milly Alcock sparked backlash for mocking Christian dads.

According to Box Office Theory, the DC superhero movie – which comes out June 26 – is expected to make between $US47 million ($A65 million) and $US65 million ($A90 million) in its opening weekend and between $US107 million ($A148 million) and $US181 million ($A251 million) in its full domestic run, reports Page Six.

The budget for the James Gunn-directed film was reportedly around $US170 million ($A236 million), while the marketing spend is estimated to exceed $US75 million ($A104 million), bringing the total to around $US245 million ($A341 million).

To break even, Supergirl needs to make around $US425 million ($A591 million) worldwide, far less than Box Office Theory’s $US350 million ($A487 million) global estimation.

By comparison, Gunn’s Superman starring David Corenswet opened to $US125 million ($A174 million) domestically in July 2025 and ended its theatrical run with $618 million worldwide. It cost around $US325 million ($A452 million) to make and promote.

The predicted Supergirl box office crisis isn’t helped by the stiff competition the film is facing.

Disney’s Toy Story 5 comes out one week earlier, on June 19, and is expected to have a $US130 million ($A180 million) to $US160 million ($A222 million) domestic opening and $US465 million ($A647 million) to $US600 million ($A835 million) domestic total.

Then, just five days after Supergirl releases, Minions & Monsters will arrive in theatres with an expected opening weekend in the $US100 million ($A139 million) to $US125 million ($A173 million) range domestically.

Additionally, the live-action Moana comes out July 10, with experts predicting a huge $US100 million ($A139 million) to $US200 million ($A278 million) domestic opening.

Supergirl stars Alcock, 26, as Clark Kent’s super-powered cousin.

The supporting cast includes Corenswet, Jason Momoa, Matthias Schoenaerts, Eve Ridley, David Krumholtz and Emily Beecham.

During a recent interview with Variety, Alcock pushed back against online critics and suggested the hateful comments come from faceless social media users, including conservative men.

“It’s from a lot of people whose profiles have no photo, who are burner accounts,” Alcock said. “Or someone’s name and then ‘Dad of four, Christian,’ which is hilarious to me.”

The House of the Dragon star added, “But I mean, whose opinion do you really care about? If you’re p***ing the right kind of people off, you’re doing OK.”

Alcock’s comments were met with further criticism online.

“And are those dads gonna take their daughters to see this movie after getting insulted? I know I’m not. And my daughter loved Supergirl,” one person tweeted last week.

“Pointing out that your critics are good dads is not a winning message,” another fan said.

A third person added, “No one is going to watch this movie now.”

Some fans also compared Alcock to Snow White actress Rachel Zegler, who sparked backlash last year when she described the original 1937 movie as “dated,” called Prince Charming a “stalker” and penned an anti-Donald Trump post on social media.

Zegler’s version of the classic fairytale bombed at the box office, which many attributed to her comments.

Supergirl flies into theatres June 25.

This article originally appeared in Page Six and was reproduced with permission