Lorde brought out Charli XCX to perform the song “Girl, So Confusing” during her headline set at Lollapalooza in Chicago [1].

The collaboration marks a high-profile public alignment between two of the most influential figures in modern pop music. By sharing the stage at one of the world's largest music festivals, the artists solidify a creative partnership that has previously captivated fans through surprise appearances and studio recordings.

The surprise guest appearance occurred during the final stages of Lorde's headlining performance [1]. The two artists performed the track together, drawing a massive response from the crowd in Chicago [1]. The performance of “Girl, So Confusing” served as a focal point of the set, blending the distinct sonic styles of both musicians.

This appearance follows a pattern of strategic collaborations between the two. The pair previously teamed up for a surprise performance of the same track at Coachella 2026 [2]. Such moments have become hallmarks of their recent professional relationship, often blending the boundaries between their individual touring cycles and shared artistic ventures.

Charli XCX has spoken about her current professional state and the joy of developing her live performances. “I’m rehearsing my live show and I’m having a lot a lot a lot of fun,” she said [3].

The Lollapalooza appearance continues to generate significant digital engagement as fans share footage of the set. The collaboration highlights the fluid nature of current pop stardom, where artists often cross-promote through guest appearances to expand their reach and create viral moments for their respective fanbases [1].

“Lorde brought out Charli XCX to perform ‘Girl, So Confusing’ during her headline set.”

The repeated live collaboration between Lorde and Charli XCX suggests a deepening professional bond that transcends a single song. By performing at both Coachella and Lollapalooza, the artists are leveraging the 'surprise guest' trope to maintain cultural relevance and drive streaming numbers for their collaborative work across major festival circuits.