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,

FireAid, featuring Billie Eilish, Lady Gaga, Sting, Red Hot Chili Peppers and others in a fundraiser for Los Angeles-area wildfire relief efforts, is the latest event to combine music and philanthropy

The band posted a series of pics with the "Birds of a Feather" singer after their team-up at last week's benefit that raised an estimated $100 million for wildfire relief.