James Gunn releases first ‘Supergirl’ teaser as full trailer set to drop this week

James Gunn debuts the first ‘Supergirl’ teaser featuring Milly Alcock, with the full trailer expected later this week

James Gunn has released the first official teaser for Supergirl, giving fans their initial look at Milly Alcock in motion as Kara Zor-El.

The preview marks a major step in Warner Bros.’ marketing rollout for the 2026 DC Studios film, arriving just days after the company’s large-scale Supergirl showcase at CCXP25.

The brief teaser, shared by Gunn across social platforms on Sunday, offers a quick glimpse of Alcock embodying the iconic character. Until now, fans had only seen still images revealed during CCXP, including the film’s official costume display. The new footage immediately circulated online as anticipation for the full trailer continues to build.

Teaser trailer this week. #Supergirl pic.twitter.com/R9a44CwIPr

— James Gunn (@JamesGunn) December 7, 2025

Warner Bros.’ push for the film intensified at CCXP, where the studio featured a dedicated Supergirl booth highlighting key elements from the movie. The activation included Kara Zor-El’s official suit, themed displays, world-building props, Krypto references, and glimpses of extraterrestrial environments tied to the film’s storyline.

Following that event, the teaser confirms that the next phase of promotion is underway. Gunn captioned the clip with a straightforward announcement: “Teaser trailer this week.” While an exact release date has not yet been provided, industry insiders expect the full teaser to arrive on Thursday.

Supergirl serves as one of the early films in the new DC Universe overseen by Gunn and Peter Safran, arriving shortly after Superman. Alcock’s casting as Kara Zor-El has been a major point of interest among DC fans, and the teaser marks the first opportunity to see her interpretation of the character in motion.

Supergirl is scheduled to hit theaters on June 26, 2026.