Billie Joe Armstrong says it was an "honor" to perform with "pretty awesome young lady" Billie Eilish. The 52-year-old rocker's band Green Day duetted with the 'Birds of a Feather' hitmaker on their 2009 track ‘Last Night On Earth’ at the FireAid benefit concert for victims of the Los Angeles wildfires at the Kia Forum on January 30.

FireAid is projected to collect $100 million in donations to those affected by the Los Angeles fires Billie Joe Armstrong was a Billie Eilish fan well before they shared the stage at FireAid. Following the benefit concert at the Kia Forum on Thursday,

The FireAid benefit concert, a one-night-only event, was held at the Intuit Dome and the Kia Forum in Los Angeles, with performances at each venue. Billie Eilish, Earth, Wind and Fire, Gracie Abrams,