Billie Eilish brings Charli XCX on stage to perform 'Guess' remix live for L.A concert

Billie Eilish and Charli XCX thrilled fans in Los Angeles on Tuesday night with a surprise live performance of their Grammy-nominated collaboration, the “Guess” remix. The electrifying appearance took place at the KIA Forum during Eilish’s ongoing global Hit Me Hard and Soft tour, marking the first time the duo performed the chart-topping track live together.

The “Guess” remix, released in August 2024, has been a runaway success, amassing over 500 million streams on Spotify and climbing to the Top 10 of the Billboard Hot 100,

The track has also gained critical acclaim, earning a nomination for Best Pop Duo/Group Performance at the upcoming 2025 Grammy Awards, solidifying its status as one of the year’s biggest hits.

Fans at the KIA Forum erupted in cheers as Charli XCX joined Eilish mid-set, with the pair delivering an unforgettable rendition of the remix. As Eilish celebrates her 23rd birthday on December 18th, the "brat" singer posted “love u billieeeeee and hbd!!! <3” on Instagram under a clip of the duo's explosive performance following the show.

The performance comes amid a banner year for both artists as both Billie Eilish and Charli XCX continue to dominate the charts.