Hours after she joined Green Day to kick off FireAid, Billie Eilish returned with brother ... of color and fizzy pop to “Just a Girl.” Gwen Stefani strutted the stage with youthful bounce ...

Bille Joe Armstrong said it was an honor to "share the stage" with Billie Eilish at the FireAid benefit concert, which is expected to raise over $100 million in donations.

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

Lady Gaga, Green Day and Billie Eilish are among more than a dozen ... Katy Perry, Joni Mitchell, Gwen Stefani, Sting, Lil Baby, Pink, Dave Matthews and John Mayer, Earth, Wind & Fire, Gracie ...

Billie Eilish performs onstage with Billie ... The members of No Doubt -- Gwen Stefani, Tom Dumont, Tony Kanal and Adrian Young -- reunited at FireAid and sang some of their biggest hits ...

UPDATE, with official lineup: FireAid has announced the official line-ups for January 30 with Billie Eilish ... Gracie Abrams, Gwen Stefani, Joni Mitchell, Katy Perry, Lil Baby, P!

Sting, Billie Eilish, Lady Gaga and the Red Hot ... The lineup also includes Joni Mitchell, Katy Perry, Lil Baby, Pink, Rod Stewart, Gwen Stefani, Green Day, Jelly Roll, Gracie Abrams, Stephen ...

Gwen Stefani put her signature style front and ... Other performers included Pink, Lady Gaga, Katy Perry, Billie Eilish, Green Day, Jelly Roll, Sting, Joni Mitchell, Stevie Nicks, Earth, Wind ...

“It’s all about love tonight,” Gwen Stefani told the audience ... nostalgia followed performances by Green Day with Billie Eilish, Stephen Stills with Graham Nash, Pink, Gracie Abrams ...