Paramore was performing at the Kia Forum in Los Angeles on Wednesday night when Haley Williams surprised the crowd by bringing out Billie Eilish to duet on Paramore's 2009 track, “All I Wanted.” On Thursday, Eilish shared an Instagram photo of her hugging Williams onstage, writing, “UGHHDKSLDJSKFJKSKFUDJSKKFKDKDK dream come truEEEEEE @paramore waaahhhhhhhhhhhhhhhhhh😭😭 i love you so much hayley holy sh*t. wish i could tell tiny me :’)))).”
But this isn't the first time they've performed together. Eilish brought Williams onstage last year during her Coachella headlining set to duet on Paramore's “Misery Business” and her own hit, “Happier Than Ever.”