Eilish also performed 'When the Party's Over' with superfan Dave Grohl in the audience on Monday's (April 1) show.
Billie Eilish learned a very important lesson when she recently visited Ellen DeGeneres for a sit-down chat and performance that aired on Monday's (April 1) episode of Ellen: never tell the amiable talk show host anything that might possibly be turned into a prank against you.
Case in point: the 17 year-old was visibly honored when DeGeneres ran down the list of famous folk who've praised Eilish, from Julia Roberts to Radiohead's Thom Yorke, Sam Smith and Foo Fighters' Dave Grohl, who was in the audience for the taping.
"I feel like recently I've met a lot of people that my parents few up as fans of...you know, that's no disrespect to your age...Dave," the singer said with a laugh and a sideways glance at Grohl, 50, adding that she was in a meeting with Stella McCartney when the designer FaceTimed in her dad, Sir Paul McCartney. "So, you know, my mom cried, my dad cried."