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 ...

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 ...

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

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 ...