Rod Stewart, Katy Perry and Lady Gaga were just some of the famous faces who performed at FireAid on Thursday, a benefit concert raising money for those affected by the devastating Los Angeles wildfires.

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.

Two concerts collectively being 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, claiming 29 lives and causing billions of dollars in damage.

Longtime bandmates Graham Nash and Stephen Stills performed together for the first time in more than a decade. The Black Crowes were joined by John Fogerty for a cover of Creedence Clearwater Reviva l's "Have You Ever Seen the Rain?," and then by Guns N' Roses guitarist Slash for a gorgeous take on Led Zeppelin 's "Going to California."

Sting, Billie Eilish, Rod Stewart, Stevie Wonder and Lady Gaga are among the stars performing at a huge benefit concert in Los Angeles to help the area recover from recent devastating wildfires.

Green Day and Billie Eilish kicked off the FireAid benefit concert, a two-venue concert extravaganza that is raising money for Los Angeles-area wildfire relief efforts.

After their set, Green Day frontman Billy Joe Armstrong hugged Billy Crystal, who was there to welcome the crowd.

Here are some of FireAid's outstanding moments: Crystal appeared as the first host in the same clothes he was wearing when he fled his family home, which was lost in the Palisades Fire. Then, with his trademark humor and heart, he recalled another national spasm of pain.

FireAid LA brought together a powerhouse lineup at the Kia Forum and Intuit Dome in Inglewood to support relief efforts for the devastating wildfires that have claimed 29 lives and caused billions in damage.

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.

Billie Eilish delivered matchless performance with Green Day in LA FireAid concert.On Thursday night, Billie and Green Day sang Last Night on Earth at an arena in Inglewood, California.Earlier this month,

The two-venue FireAid Benefit Concert was held in Los Angeles on Thursday night to help raise money for the Southern California communities affected by the devastating fires that ignited earlier this month.