Eighteen-year-old Billie Eilish made history last night, becoming the first woman to win the Grammys for Best New Artist, Album of the Year, Song of the Year, and Record of the Year to her list of awards - dominating the 62nd edition of the award show.
Eilish becomes the youngest person ever to win the award for Album of the Year for her debut, When We All Fall Asleep, which was previously held by Taylor Swift. Eilish recorded the album in her LA childhood home.
During her acceptance speech, the 'Bad Guy' singer said: "I joke around a lot at these things, but I genuinely want to say I'm so grateful." Eilish triumphed in all of the Grammys "big four" marquee wins.
The American teenager is the first person to achieve the feat since Christopher Cross in 1981.
Eilish's elder brother, Finneas O'Connell, also went on to pick up the award for Producer of the Year for his work on his sister's album.
O'Connell said the record had been at home because: "I'm the most creative where I'm most comfortable [...]It's a huge honor to be given a Grammy for making home-made cookies".
Eilish seemed to be overwhelmed by the extent of her domination of the awards. As the teenager accepted the Album of the Year prize, she turned to fellow nominee Ariana Grande and said: "Can I just say that I think Ariana deserves this?" (Grande would wave off the compliment.)
Earlier, on the red carpet, the young singer said she felt like an impostor, saying: "I feel like I'm not supposed to be here. I feel like they accidentally let in a fan."
Joining his sister on stage, Finneas said: "We didn't make this album to win a Grammy. We wrote an album about depression and suicidal thoughts and climate change and being a bad guy, whatever that means. And we stand up here confused and grateful."
Eilish is not only the youngest person to be awarded for the top four prizes, but she is the youngest person to win the top four prizes.