Just as FireAid hit the five-hour mark, Billie Eilish and her brother Finneas turned down the volume for an acoustic set as the night neared its end. Eilish had already made a cameo to set off the event earlier in the evening,

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. The FireAid benefit featured surprise pairings and generation-spanning acts,

The members of No Doubt -- Gwen Stefani, Tom Dumont, Tony Kanal and Adrian Young -- reunited at FireAid Thursday night and sang some of their biggest hits, including "Just a Girl," "Spiderwebs" and "Don't Speak."