Billie Eilish made an appearance during Green Day’s set at the FireAid concert on Jan. 30. The Grammy winner came out as the rock band was performing “Last Night on Earth” and sang a stunning rendition of the song with them.

Billie Eilish and Green Day kicked off the FireAid benefit concert in Los Angeles on Thursday night - a two-venue, five-hour extravaganza raising money for wildfire relief efforts.

The star-studded January 30 event is dedicated to rebuilding communities that have been devastated by wildfires

Billie Eilish made a surprise appearance during Green Day's set at the FireAid benefit concert on Thursday night. The star-studded gigs were held simultaneously at the Intuit Dome and Kia Forum in Inglewood, California to help raise funds for the communities impacted by the wildfires that devastated the state earlier this month.

A number of celebrities have recently made substantial donations to help the victims of these fires. American thrash metal band Metallica donated $500,000 via its All Within my Hands foundation. Beyoncé donated $2.5 million to the Los Angeles Fire Relief Fund. Actress Jamie Lee Curtis donated $1 million to help the victims.

FireAid LA brought together a powerhouse lineup at the Kia Forum and Intuit Dome in Inglewood to support relief efforts for the devastating wildfires that have claimed 29 lives and caused billions in damage.

Stars Billie Eilish, Lady Gaga and Sting were among the singers slated to perform at a charity concert to aid the wildfire relief efforts