Charli XCX renewed her contract with Atlantic Records.

Charli XCX embarked on the Sweat tour with Troye Sivan and a solo tour under the Brat name to support her album.

Brat was nominated for the Mercury Prize for Album of the Year.

Brat won the Danish Music Award for International Album of the Year.

The Green Party of England and Wales posted a replica of the album cover to social media that read "vote green" instead of "brat" as part of their United Kingdom general election campaign.

Charli XCX debuted snippets of tracks "Spring Breakers" and "365" during her Boiler Room warehouse set, joined onstage by Addison Rae and Julia Fox.

Charli XCX announced the release of her album Brat, a day before the release of the lead single "Von Dutch".

Charli XCX premiered the song "So I" at the Billboard Women in Music event.

A remix of "Von Dutch" featuring Addison Rae and A. G. Cook was released.

Charli XCX released "Club Classics" and "B2B" as a two-pack promotional single.

Charli XCX announced the release of her next single, "360".

Charli XCX released the single "360" along with its music video featuring Gabbriette, Chloë Sevigny, Julia Fox, and Rachel Sennott.

A remix of "360" featuring Robyn and Yung Lean was released.

Charli XCX debuted two unreleased songs live, "365" and "Everything Is Romantic", during her headlining set at Barcelona's Primavera Sound festival.

Charli XCX's sixth studio album, Brat, was released through Atlantic Records. The album features production by Charli XCX, A. G. Cook, Finn Keane, Cirkut, George Daniel, and others, drawing influence from the 2000s English rave music scene.

Charli XCX released a deluxe edition of her album Brat, titled Brat and It's the Same but There's Three More Songs So It's Not, featuring three additional songs.

A remix version of "Girl, So Confusing" featuring Lorde was released.

A remix version of "Guess" from the deluxe edition was released featuring Billie Eilish.

The song "Apple" was released to Italian radio as the album's third single.

A "Talk Talk" remix featuring Troye Sivan was released, along with the announcement of a remix album titled Brat and It's Completely Different but Also Still Brat.

Charli XCX released a remix album titled Brat and It's Completely Different but Also Still Brat, featuring 20 guest artists.

Collins English Dictionary named "brat" the word of the year.

Forbes named the "Brat summer" as one of the biggest pop culture moments.

Brat was nominated for Grammy Awards, winning three of them.

Brat sold over 300,000 units in the UK, earning it a platinum certification.