Two concerts collectively referred to as FireAid kicked off at the Kia Forum and the Intuit Dome in the Los Angeles city of Inglewood to support relief efforts in the wake of the deadly wildfires that ignited earlier this month in the LA area,

Billie Joe Armstrong and Billie Eilish. Green Day got things started at the Kia Forum, where they surprised fans with Eilish to help them perform, "Last Night on Earth" from 2009's 21st Century Breakdown.

Billie Eilish sang with Green Day and Stevie Nicks thanked the firefighters who saved her home at two star-studded concerts on Thursday to raise money for wildfire relief in Los Angeles.