The 32-year-old singer, real name Charlotte Aitchison, created the phrase upon the release of her sixth studio album – “Brat”
She and Oscar-winning Eilish have unveiled a new music video for the Guess remix, directed by Aidan Zamiri.
In the video, the two can be seen ascending a mountain of underwear while the American actress, 23, operates a bulldozer.
“Thank you for letting me be a part of dis,” Eilish captioned the music video on Instagram.
Charli XCX teased the Guess remix earlier this week, releasing a selfie of herself and a guest artist with their faces cut off.
Fans recognized Eilish as the singer from “What Was I Made For?” because she was wearing the identical rings she had worn in previous interviews.It comes after Charli XCX tweeted: “Kamala IS brat” when Kamala Harris replaced Joe Biden as the Democratic nominee for the upcoming US election.
The Biden-Harris campaign account altered its banner to Kamala HQ, which had the same font and bright green background as the Brat album cover.