The pop vocalist also treated the Lolla crowd to her solo hits "Driver's License," "Traitor," "Love Is Embarrassing" and more ...

On Thursday evening, Olivia Rodrigo made her debut at Lollapalooza Chicago and was joined by Weezer to perform their tracks, "Buddy Holly" and "Say It Ain’t So".

The singer/songwriter was then joined onstage by Weezer trio Rivers Cuomo, Brian Bell and Scott Shriner to play Buddy Holly ...

Olivia Rodrigo rocked Lollapalooza with surprise guest Weezer, performing ‘Buddy Holly’ and ‘Say It Ain’t So’ live.

She was joined onstage by Weezer during her set, where they performed the band’s hits "Buddy Holly" and "Say It Ain’t So" ...

Lollapalooza weekend continues in Chicago (and at home, if you’re streaming it live ), and Olivia Rodrigo headlined night 2 ...

Olivia Rodrigo rocked the Lollapalooza crowd by bringing out a special guest during her headlining set at the music festival.

Olivia Rodrigo delivered alongside surprising guests Weezer as Lollapalooza continued in Chicago with performances by T-Pain, ...

The pop star continues her parade of hero collaborators on the festival circuit, bringing out pop-rock band Weezer out for ...

Olivia Rodrigo continues to build her alt-rock credibility with another high-profile collaboration, this time with Weezer's ...

Watch Olivia Rodrigo bring out Weezer during her Lollapalooza headline set in Chicago on Friday night (August 1) ...