She wore a tailored black jacket atop an untucked white button-up shirt, black slacks and matching dress shoes.

With an epic surprise collaboration — two Billies: Billie Joe Armstrong and Billie Eilish ... Graham Nash, Green Day, John ...

Audiences tuning into the FireAid benefit concert for Los Angeles on Thursday night (Jan. 30) were surprised with an early treat when pop superstar Billie Eilish made a surprise appearance ...

and a black Prada sailor hat. Her dark hair was styled in a low bun, with face-framing layers. Keeping her look minimal, she opted for natural nails and subtle makeup. Eilish was accompanied by ...

Billie Eilish ... black and gray patterned button-down shirt, flared trousers and bucket hat. And for the 2020 show — her history-making Grammys debut — the singer donned a glimmering green ...

(AP) — Green Day kicked off the massive FireAid ... They launched into “Last Night on Earth,” and were soon joined by Billie Eilish for the first surprise of the night.

Billie Eilish and Billie Joe Armstrong opened the star-studded benefit show with a stunning duet. By Stephen Daw Pride Editor Audiences tuning into the FireAid benefit concert for Los Angeles on ...

The star, known for her edgy red carpet ensembles, arrived at the ceremony in a simple black look Bailey Richards ... Kevin Mazur/Getty Billie Eilish and the red carpet go together like birds ...

Billie Eilish ... black Chrome Hearts sunglasses, and a black Prada sailor hat. Her dark hair was styled in a low bun, with face-framing layers. Keeping her look minimal, she opted for natural ...