The Real Reason Milly Alcock Didn’t Talk to Previous Supergirl Actors

So, Milly Alcock might be the next Kryptonian you see soaring across your screen, but she isn’t exactly following the usual superhero blueprint. The House of the Dragon breakout (remember young Rhaenyra?) is gearing up for her own take on Supergirl—and she’s doing things her way, not chasing the cape-wearing footsteps of anyone who came before.

Making Supergirl, Alcock-Style

If you’re expecting heartwarming mentorship moments between Alcock and previous Supergirls like Sasha Calle or Melissa Benoist, you can forget it. According to Alcock, she didn’t reach out to them at all while prepping for the role. Why? In her words:

'They’re just people living their lives. It’s not like we have this blood bond.'

In other words, she’s not interested in building some kind of Supergirl sisterhood lore. She wanted to carve out her own Supergirl from scratch, trusting her instincts instead of swapping tips or trading superhero secrets.

Going Her Own Way—On And Off Set

This ‘do it myself’ habit isn’t just about capes and costumes. Alcock actually takes the same approach no matter who’s on set—even veteran stars. Take her experience filming with Julianne Moore in Netflix’s Sirens: Alcock didn’t treat Moore like some living, breathing acting workshop. She explained that you have to respect your co-stars’ boundaries—they don’t owe you anything beyond the job itself. That’s a pretty un-Hollywood attitude, but honestly, it’s refreshing.

Pressure? Oh Yeah, She Feels It

Naturally, Alcock knows the Supergirl gig comes with massive expectations (anyone remember how worked up fans got over a Superman casting?). She’s pretty blunt about the anxiety, admitting:

'Of course I’m scared. Of course I want people to like me and the movie. But ultimately, it’s out of my control.'

So, she’s nervous—who wouldn’t be? But she’s also realistic about what she can actually control, which is pretty healthy for someone about to anchor a DC tentpole.

A Quick Milly Alcock Timeline

• Early days: Cold-calling talent agents (!!), hustling for auditions—Alcock didn’t come up through famous acting schools or family connections. Her family struggled financially, so Milly brought major grit to getting her foot in the door.
• Big break: Lands House of the Dragon, brings some much-needed edge and intrigue to the Targaryen family tree.
• Netflix’s Sirens: Shares scenes with Julianne Moore, keeps her cool, doesn’t treat Moore like a professor.
• Supergirl: Now flying under the Warner Bros. banner, headlining a massive studio superhero flick.

'If Those Idiots Can Do It…'

Here’s a pretty great example of Alcock’s attitude, straight from her mom:

'My mother instilled this blind confidence within me: If those idiots can do it, why can’t you?'

Honestly, that could be the unofficial tagline for most superhero movies.

What Her Supergirl Will Actually Be Like

Alcock says she’s playing Kara Zor-El as something other than your typical world-saver. She’s digging into the character’s personal challenges—this Supergirl is less about instantly leaping tall buildings, and more about figuring out who she is while carrying the weight of the world. It sounds like we’ll get something more three-dimensional than a flying symbol of hope, which, let’s face it, the DC universe could use right now.