Olivia Rodrigo rocked the Lollapalooza crowd by bringing out a special guest during her headlining set at the music festival.
Weezer joined Rodrigo on stage Friday during her debut headlining set.
Rodrigo and Weezer’s Rivers Cuomo duetted on two iconic Weezer hits: “Say It Aint So” and “Buddy Holly.”
Introducing the band, Rodrigo told the crowd that Weezer was the first concert she ever attended.
Weezer will be back in Chicago in September to headline Riot Fest.
NBC Chicago’s Matt Rodrigues posted a video of the guest appearance to Instagram.