Sombr brings out 5 Seconds of Summer for surprise duet at Lollapalooza 2026

Sombr surprised his Thursday night Lollapalooza audience by bringing out 5 Seconds of Summer on the T-Mobile mainstage in Chicago. The two acts performed 'She Looks So Perfect', the Australian band's 2014 breakout single, together. Rolling Stone reported the appearance on 31 July 2026. Both acts were listed in the festival's official lineup when announced in March.