The “Shallow” singer closed out the star-studded benefit concert with a song she co-wrote for the show with her fiancé, Michael Polansky.

Take a look at some of the most special moments from FireAid below. Remaining Nirvana members reunited with special guests.

Despite not performing at Fire Aid, the LA wildfire relief concert, U2 made their presence known with their donation.

The members of No Doubt -- Gwen Stefani, Tom Dumont, Tony Kanal and Adrian Young -- reunited at FireAid Thursday night and ...

After reuniting at Coachella last year, No Doubt came together again for a good cause. The plaid-clad band reunited at ...

P!nk, Joni Mitchell, and Lady Gaga were just a few of the highlights in a night that also featured a No Doubt reunion and the ...

After joining Green Day for their FireAid-opening set at the Kia Forum earlier Thursday night (Jan. 30), Billie Eilish took ...

Red Hot Chili Peppers were the last to take the stage at the Kia Forum at the FireAid benefit show for Los Angeles wildfire ...

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.

Green Day and Billie Eilish kicked off the massive FireAid benefit concert Thursday night, a two-venue concert extravaganza ...