Olivia Rodrigo was joined by surprise guest Weezer during her headlining set at Lollapalooza 2025. On Friday (Aug. 1), the 22-year-old pop superstar made her debut on the second day of the Chicago music festival at Grant Park. Toward the end of her evening set, she surprised the crowd by inviting Weezer to join her on stage.

After Lollapalooza, Rodrigo wrapped her GUTS tour shows when she played Osheaga Festival in Montreal on Aug. 1 and 3. Meanwhile, Weezer will play festivals across the country in August, September and October before heading to South America in November for three shows.

Rodrigo made her Lollapalooza debut with a powerful headlining set. Olivia Rodrigo delivered a powerful performance Friday night as she made her Lollapalooza Chicago debut, headlining Day Two of the annual music festival in Grant Park.