5 Seconds of Summer looked so perfect standing there at Lollapalooza, where the pop-rock band joined sombr on stage as well as covered a Katy Perry classic during its own set.
In clips captured by Billboard from the first day of the Chicago festival on Thursday (July 30), bandmates Luke Hemmings, Michael Clifford, Calum Hood and Ashton Irwin provide backup for the “Back to Friends” vocalist as he put his own vocal spin on “She Looks So Perfect,” 5SOS’ breakout 2014 hit that peaked at No. 24 on the Billboard Hot 100.
“Lollapalooza that was f–king crazy,” sombr wrote on his Instagram…
