Billie Eilish broke the internet when she brought out Charli XCX to join her onstage at the Kia Forum in Los Angeles last night as a surprise to her fans. The two performed their Guess remix, and footage of the same is going viral online.
The singer is currently on the road for her North American tour, and during the concert, Charli XCX caught fans by surprise when she stepped out from under a B-stage. The entire arena was blanketed in Brat-green lighting and laser beams, as seen in several clips online.
Fans are thrilled, to say the least, with many wishing they had attended the concert as well. Here's what one user stated:
"holy f*** i cant even believe im watching this i think i would have died on the spot if i were in that building."
The online space was visibly in high spirits as even more users chimed in:
"That must have been off the hook.. BONUS for all the supporting fans. WINNING!!" one user declared.
"this is more iconic than any moment of the eras tour omg," one fan compared.
"billie continues to give the gays what we WANT," another exclaimed.
"The lucky ones who saw this live though," someone else noted.
Even more couldn't contain the excitement:
"Omg this is iconic!!!" one user stated.
"how does it feel to live MY DREAM????" someone else jokingly asked.
"THIS IS MONUMENTAL," a fan penned.
"That collab’s fire! Billie and Charli on stage together is next-level energy," a fourth user pointed out.
Fans were visibly ecstatic at seeing Billie Eilish and Charli XCX come together for a performance.
Charli XCX says she "loves" Billie Eilish as the two get cozy with each other on stage
Charli XCX and Billie Eilish's rendition of Guess made it to her remix album, Brat And It’s Completely Different But Also Still Brat, which dropped this October. As for the concert, she took to social media on December 18 to share in her fans' excitement:
"love u billieeeeee and hbd!!! <3,” she wrote.
The track has also been nominated for Best Pop Duo/Group Performance at the 2025 Grammy Awards, and in the clips circulating online, the Hit Me Hard And Soft singer can be heard singing:
“Charli likes boys, but she knows I’d hit it. Charli, call me if you’re with it.”
Billie Eilish identifies as queer. As for Charli, towards the end of the track, the 32-year-old sings:
"You wanna guess what me and Billie have been texting about... You wanna guess if I’m serious about this song.”
All the undergarments used in the making of the music video were donated to women and girls of poorer backgrounds via the I Support The Girls non-profit. A press release for the same read:
"All bras and underwear used in the music video have been donated to I Support The Girls. ISTG collects and distributes essential items, including bras, underwear and menstrual hygiene products, allowing people experiencing homelessness, impoverishment or distress to stand tall with dignity."
As for Billie Eilish, at 23 years old, she is the youngest singer to bag an award in all notable categories at the Grammys.