Lorde, Charli XCX duet on Girl, So Confusing remix at Kia Forum

Lorde surprised thousands of fans at the Kia Forum in Los Angeles on Oct. 18 by bringing Charli XCX onstage to perform the collaborators' remix of Charli's song "Girl, So Confusing" during the encore of her Ultrasound World Tour stop. The unannounced duet, which followed a climactic set that spanned Lorde's catalog, turned the arena into a raucous singalong and capped a night the artists described as raw and cathartic.

Lorde signaled the moment by writing the word GIRL on her palm while performing on a platform in the center of the arena and asking the crowd, "Can I trust you?" Footage captured by attendees showed the word projected on the big screen as the track's hook began. Charli, who had been on the floor of the venue, then launched into her opening verse and made her way through the audience to join Lorde. The pair traded confessional lines from the remix and closed the performance dancing together before embracing and departing the stage.

The remix, issued last year, reframes themes of rivalry, comparison and female friendship that appear on Charli's album Brat. Charli has said she sent Lorde a voice note about the original song, and Lorde later proposed taking part in a...