Oliwia Nazaruk, forensic chemist at the Drug Enforcement Administration, holds a vial of cocaine tested at a facility in Chicago. Chemists test batches of seized cocaine to determine the purity and origins and to track movements of specific shipments for future investigations.

Olivia Rodrigo delivered alongside surprising guests Weezer as Lollapalooza continued in Chicago with performances by T-Pain, Flipturn, Gigi Perez, Bo Staloch and more.

It's a very, very special moment," Rodrigo told the crowd in Chicago's Grant Park on the second day of this year's fest. "I remember my first concert. It was a very memorable night. I watched this incredible band and I am so over the moon,

Olivia Rodrigo and Korn will provide contrasting styles Friday evening as Lollapalooza heads into the weekend. Djo, Ravyn Lenae, T-Pain and Bleachers are also set to take the stage Friday.

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.

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.

Olivia Rodrigo wrapped up her GUTS era with a gift to her fans. Rodrigo, 22, took to TikTok on Sunday, August 3, to share that she took off each of her four silver rings, which spelled out “GUTS” while performing at Lollapalooza on Friday,

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.

Lollapalooza weekend continues in Chicago (and at home, if you’re streaming it live ), and Olivia Rodrigo headlined night 2 on Friday (8/1). It was her first time headlining the festival, and towards the end of her set she brought out Weezer to join her on renditions of their Blue Album hits “Buddy Holly” and “Say It Ain’t So.” Watch that below.