The veteran R&B act ran through two of their most iconic hits with the "Espresso" singer on Sunday night (Aug. 3) in Chicago.

On the final night of Lollapalooza, one of the festival's biggest headliners brought out music legends to help the crowd just "let loose and groove."

Sabrina Carpenter headlined the final night of Lollapalooza on Sunday. She’s been covering a lot of ’80s pop hits for a while now, and lately she’s been able to bring some of the original artists on stage too;