Singer-songwriter Billie Eilish announced Saturday during a show in England that she is collaborating with filmmaker James Cameron on a mysterious 3D project.

Pop star Billie Eilish and James Cameron are working together on some form of 3D film. The singer announced as much on stage — according to Deadline — during a gig at Manchester’s Co-Op Live Arena. “You may have noticed there’s more cameras than usual up here,” Eilish said to the crowd.

Billie Eilish revealed that she has a 'very special' 3D project in the works with director James Cameron at a concert in Manchester: 'I'll probably be wearing this exact outfit for like four days in a row.