Olivia Rodrigo appears as a surprise guest during a Smashing Pumpkins performance at Lollapalooza, joining the band on “Thirty-Three.” Multiple outlets report that the set also includes other guest appearances, including Yungblud. Consequence additionally notes that Melissa Auf der Maur joins as a surprise guest, expanding the lineup beyond the main band members.

Rolling Stone describes the performance as nostalgia-fueled and credits Billy Corgan with delivering songs including “Luna” and “Thirty-Three” during the set, with Rodrigo and Yungblud appearing in the moments tied to the collaboration. The reports present the guest appearances as unscheduled additions to the live show, drawing attention to how the band incorporates guest performers during festival performances. Overall, sources agree on the core event: Rodrigo joins Smashing Pumpkins on “Thirty-Three” at Lollapalooza, alongside other surprise guests.