Tate McRae, Gwen Stefani and Katy Perry are also set to take the stage for the benefit show, as will John Mayer and Dave ...

The singer shared rare insight into her beauty routine, including all the products she uses for her Hit Me Hard and Soft tour Billie Eilish/TikTok ... off her post-concert face.

Get ready to fall on your knees: Billie ... additional concert clip. “I also grew up in a choir, so that’s just my s---.” Fans immediately took to the comment section of Eilish's post ...