Billie Eilish and her brother, Phineas O'Connell, appeared on SiriusXM's "The Howard Stern Show" on Monday morning.
Towards the end of the interview, the singer brought her parents into the studio to meet Stern and the crew. Stern asked them about the night they "conceived" Billie, as a way to give advice on creating a successful child, and they revealed "Well, Billie was conceived with the existence of a fertility clinic."
"So, Billie was built in a lab," Stern joked, as her father admitted, "I was alone in a dark room," and that she was the fourth attempt.
Billie was astonished, having never known she wasn't conceived naturally, and asked why they used a fertility clinic. The parents described that after having their son Phineas, they had trouble getting pregnant again and turned to a fertility clinic for help.
"Billie, you look like you're going to pass out." Stern remarked when her parents described the process of going through IVF.
Video performing her new single, "All the Good Girls Go to Hell":