Milly Alcock Wears Balenciaga for the ‘Supergirl’ NYC Premiere

Milly Alcock channeled her dark punk side in a look by Balenciaga for Monday night’s red carpet premiere of “Supergirl” in New York City.

The “House of the Dragon” alum wore a selection from the Spanish luxury fashion house’s spring 2026 ready-to-wear collection, designed by creative director Pierpaolo Piccioli. The look, cast in monochrome black, consisted of a strapless, structured bodice with a bubble peplum motif below the waist, black trousers and a pair of leathery coordinated gloves.

Alcock continued with more Balenciaga pieces, wearing Duchesse pumps from the label as well. As for jewelry pieces, the actress wore a pair of cascading diamond earrings by Jacob & Co. that added a touch of sparkle to Alcock’s overall look.

Alcock’s golden blond hair was styled with a middle part and soft waves by stylist DJ Quintero. Makeup highlights for the actress continued the punk edge, with bold brows, darkly lined eyes and a neutral, glossy lip by artist Tyron Machhausen. Alcock’s “Supergirl” premiere attire was curated by stylist Felicity Kay.

The actress’ Balenciaga look made its runway debut as part of Paris Fashion Week in October 2025. The spring 2026 ready-to-wear collection marked designer Pierpaolo Piccioli’s debut with the label as the new creative director, a role to which he was appointed in May 2025 and assumed in July of that same year.

“Nods to the founder were many, including T-shirt, white shirt and black leather cape versions of the founder’s famous Darth Vader-esque 1967 wedding ensemble, and numerous balloon dresses and skirts, the most striking in black leather,” Miles Socha wrote in WWD’s review of the collection.

“I don’t want to deny what has been here before,” Piccioli said following the show, acknowledging the blend his collection took of Balenciaga’s traditional design codes with his own vision for the brand.

“Supergirl” follows Kara Zor-El, aka Supergirl, played by Alcock, as she teams up with an unlikely companion to seek justice when an adversary threatens those she loves most. The film hits theaters Friday.