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.

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 checked a big item off her bucket list when she played "Buddy Holly" with the band over the weekend in Chicago.