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 ...

Billie Eilish, a Los Angeles native herself ... “All Apologies,” which was sung by Violet Grohl. Introduced by Gwen Stefani, Stevie Nicks took the stage to perform “Stand Back,” before ...

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 ...