Sabrina Carpenter surprised Lollapalooza attendees by joining Earth, Wind & Fire on stage. The pop star, known for her hit song "Espresso," performed alongside the legendary band for renditions of their classic hits “Let’s Groove” and “September.” The unexpected collaboration brought a high-energy, cross-generational moment to the festival, delighting fans of both Carpenter and Earth, Wind & Fire. Videos of the performance quickly circulated on social media, generating buzz and excitement.