Naturally, the internet went crazy as the announcement made waves on social media, and fans are theorizing that the artist and director are joining forces for a 3D concert film following the success of Taylor Swift: The Eras Tour and Renaissance: A Film by Beyoncé.

Billie Eilish told fans mid-performance in Manchester that she's filming a secret 3D project with legendary director James Cameron. The surprise announcement sparked speculation that a concert film, or something even bigger,

Billie Eilish and James Cameron are teaming for some kind of 3D concert film, the singer announced Saturday from the stage during a performance in Manchester, United Kingdom.