Will James Gunn shock the DC Universe fandom and unleash the full, cosmic power of the Woman of Tomorrow a day earlier than expected? The anticipation surrounding the first trailer for Supergirl is reaching a fever pitch, promising an initial look at Milly Alcock’s portrayal of a Kryptonian hero far more intense.

The official unveiling of the first footage of the Supergirl movie is scheduled for the week, with an earlier drop possible.

DC Studios co-CEO James Gunn recently confirmed that the first trailer for Supergirl would be released this week, featuring initial glimpse of Milly Alcock as the Woman of Tomorrow in a ten seconds long preview.

While original reports suggested the teaser would arrive on Thursday, December 11, 2025, at 12:00 PM Eastern Time (ET) or 9:00 AM Pacific Time (PT) in the USA, a placeholder image and other promotional materials from DC Comics later confirmed this specific release time.

This long-awaited solo film will introduce a Supergirl forged by trauma, unlike the heroic Clark Kent. Her story is set to adapt the acclaimed comic series Supergirl: Woman of Tomorrow, giving the DC Universe a galactic, space-fantasy adventure that will fundamentally shape the new cinematic continuity.

Her full introduction follows her brief cameo in the final moments of Superman (2025), where she arrived with a distinctly rough-around-the-edges attitude. The film, directed by Craig Gillespie, will lean heavily into the space fantasy genre, with the full trailer giving fans a taste of the epic cosmic journey she undertakes.

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Understanding the foundation of the new shared universe is crucial for appreciating Kara’s forthcoming space adventure.

Before the highly anticipated Supergirl film debuts on June 26, 2026, viewers should prioritize the foundational projects of the new DC Universe, which set the context for Kara Zor-El's journey.

The essential prerequisite is the first film in the new DCU, Superman (2025), where Milly Alcock’s Supergirl made her debut cameo appearance. This film establishes the contemporary world and the existence of the House of El in the DCU.

Viewers are strongly advised to watch the animated series Creature Commandos (2024) and the second season of Peacemaker (2025). These titles, though not directly featuring Supergirl, are the first projects under the Gods and Monsters chapter and establish the tone, connectivity, and world-building approach of the James Gunn-led DC Studios, ensuring a complete understanding of the new continuity.

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Do you know more about the comic book storyline Supergirl: Woman of Tomorrow that the movie Supergirl is based on? Let us know in the comments below.