It was a big night for Billie Eilish at the 62nd Annual Grammy Awards.

The Interscope/Dark Room artist took home five awards, including the top four categories of song of the year, album of the year, record of the year and best new artist, in addition to best pop solo album.

Her brother Finneas O’Connell was named producer of the year and also took home best engineered album, non-classical.

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“We didn’t make this album to win a Grammy,” said O’Connell. Rather, they collaborated on an album about “depression, suicidal thoughts, climate change and being a bad guy, whatever that means. … So we stand up here confused and grateful.”

The 18-year-old also won album of the year for her debut, When We All Fall Asleep, Where Do We Go, which was recorded in her childhood home in LA.

She replaces Taylor Swift as the youngest person ever to win the award.

"I joke around a lot at these things, but I genuinely want to say I'm so grateful," said the singer.

Eilish triumphed in all of the Grammys "big four" marquee categories - song of the year, record of the year, album of the year and best new artist.

The nominees for album of the year were Bon Iver Lana Del Rey ("Norman F***ing Rockwell" Eilish ("When We All Fall Asleep Where Do We Go" Ariana Grande ("Thank U, Next H.E.R. ("I Used to Know Her Lil Nas X Lizzo ("Cuz I Love You" and Vampire Weekend Father of the Bride"

She is the first person to achieve the feat since Christopher Cross in 1981.

Her elder brother, Finneas O'Connell, also picked up producer of the year for his work on Eilish's album