Singer also confirmed that the Queen was not present during the festival
Pop star and her brother/collaborator Finneas premiered the track at a show in Manchester, England
5 Seconds of Summer, Charlie Puth, Billy Porter, and more have also joined the campaign
Host’s Netflix show My Next Guest Needs No Introduction returns on Friday
“When Billie Met Lisa” premieres April 22 exclusively on Disney+
Eilish was one of the most nominated artists at this year’s show, racking up seven nominations
The haunting track minutes later won Best Original Song
Sunday’s ceremony will also feature performances by Reba McEntire and Sebastián Yatra
Brandi Carlile, Lil Nas X, and Jack Harlow also set to take the stage in Las Vegas