Billie Eilish is working it out on the remix.

Brat summer continues on as the pop star joins Charli XCX on a new version of her deluxe track “Guess.” Charli made the announcement in an Instagram video shared Thursday. The remix drops Aug. 1 at 6 p.m. ET.

Charli confirmed the collaboration via Instagram earlier this week. In the clip, Charli calls up the “Lunch” singer before the song’s electronic beat comes pounding in. “Hey Billie, you there?” she asks, before showing a brief clip of the two of them collapsing on top of a pile of bras.

All bras and underwear used in the music video have been donated to I Support The Girls, according to a press release. ISTG collects and distributes essential items, including bras, underwear and menstrual hygiene products to people experiencing homelessness, impoverishment or distress.

‘Guess featuring Billie Eilish’ follows the release of two of the most critically acclaimed albums of 2024; Billie EIlish’s third studio album HIT ME HARD AND SOFT [Interscope/Darkroom Records] and Charli xcx’s sixth studio album BRAT [Atlantic Records].

 
On September 29, Billie Eilish will embark on her North American HIT ME HARD AND SOFT: THE TOUR. Her U.K., European, and Australian leg of the tour starts in 2025.

Photographs by Billie Eilish