Summary (tl;dr)

Milly Alcock, widely recognized for her role in House of the Dragon, is currently trending after DC Studios and Warner Bros. Pictures released the second official trailer for her upcoming film, Supergirl, offering a new look at her portrayal of Kara Zor-El in the revamped DC Universe.

Essential Background

Supergirl, also known as Kara Zor-El, is a renowned superhero from DC Comics and the cousin of Superman. Actress Milly Alcock gained international prominence for her critically acclaimed performance as young Rhaenyra Targaryen in HBO's House of the Dragon. James Gunn and Peter Safran are at the helm of a new DC Universe (DCU), with Supergirl: Woman of Tomorrow being a significant project in their initial Chapter One: Gods and Monsters slate. Alcock was officially cast as Supergirl in January 2024, with James Gunn revealing that she was his top choice for the role after being impressed by her work in House of the Dragon. She previously made a cameo appearance as the character in the 2025 Superman film.

The Full Story

On March 31, 2026, DC Studios and Warner Bros. Pictures unveiled the second official trailer for the highly anticipated Supergirl movie. The trailer prominently features Milly Alcock as Kara Zor-El, showcasing a more "hardcore," cynical, and vengeance-driven interpretation of the character, distinguishing her from her famous cousin, Superman. The film, directed by Craig Gillespie, is an adaptation of Tom King and Bilquis Evely's Supergirl: Woman of Tomorrow comic book series, promising an intergalactic adventure centered on a quest for revenge. Supergirl is slated for release in theaters and IMAX on June 26, 2026.

Why It Matters

The release of this new trailer and Milly Alcock's leading role are pivotal for the DCU as it continues to build its new cinematic continuity. This iteration of Supergirl aims to provide a fresh and distinct portrayal, exploring a more complex and darker facet of the character. There is considerable fan interest in seeing how Alcock, celebrated for her compelling performance in House of the Dragon, will embody this "hardcore" version of Supergirl and her integration into the broader DCU narrative.

Geographic Location

• Warner Bros. Studios Leavesden, Leavesden, Hertfordshire, England, United Kingdom (filming of Supergirl)
• London, England, United Kingdom (filming of Supergirl)
• Scotland, United Kingdom (filming of Supergirl)
• United States (scheduled theatrical release of Supergirl)
• Virtual/Online (second official trailer released by DC Studios and Warner Bros. Pictures)