Billie Eilish made a surprise appearance on stage with Green Day on Thursday to kick off one of two star-studded concerts in Los Angeles put together to raise funds for people affected by deadly wildfires in California this month.

Nirvana, Lady Gaga, Billie Eilish, Green Day, Stevie Nicks, No Doubt and more performed at the Los Angeles benefit concert FireAid.

Follow live updates on the FireAid benefit concert, which will feature performances from Billie Eilish, Lady Gaga and more, as they raise money for Los Angeles-area wildfire victims.

There are a bunch of benefit concerts for the LA wildfires coming up, and FireAid is the biggest. Taking place at both the Intuit Dome and Kia Forum in Inglewood, the event has Lady Gaga, Billie Eilish,

"L.A. is my favorite place in the world and my only home," Eilish told the crowd. "We grew up here, and I care about it so much"

Sting, Billie Eilish, Rod Stewart, Stevie Wonder and Lady Gaga were among a host of A-list headliners taking part in a benefit concert for victims of the recent devastating LA wildfires on Thursday.

St. Vincent performs with Krist Novoselic of Nirvana onstage during the FireAid Benefit Concert for California Fire Relief. (John Shearer/Getty Images for FireAid)

Follow live updates on the FireAid benefit concert, which will feature performances from Billie Eilish, Lady Gaga and more, as they raise money for Los Angeles-area wildfire victims.

The show will feature performances from Billie Eilish, Lady Gaga and the Red Hot Chili Peppers at both the Intuit Dome and the Kia Forum

FireAid—a benefit concert for victims of the L.A. wildfires featuring Lady Gaga, Olivia Rodrigo, Billie Eilish, Jelly Roll and several others is this week. Find out when you can watch it and where.

Some of the biggest names in music, including Billie Eilish, Lady Gaga, and Green Day, played FireAid at the Kia Forum and Intuit Dome on Jan 30.