Their co-headlining trek hit Madison Square Garden in New York City.

Charli XCX brought out Lorde for the ‘Girl, So Confusing’ remix during her Monday, September 23, show at Madison Square ...

Brat summer is technically over, but brat fall is just getting started thanks to Charli XCX and Troye Sivan's Sweat tour, ...

In a surprise set, Lorde took the stage to perform their "Girl, so confusing" remix alongside Charli for the first time. The ...

The pop stars previously worked their issues "out on the remix" of the "Brat" track, which detailed Charli XCX's complex ...

Charli XCX and Troye Sivan bring out Lorde and Addison Rae at Madison Square Garden in New York City. The surprise guests ...

Lorde really does ride for Charli. Charli XCX brought out Lorde for a performance of “Girl, so confusing” in New York City ...

Lorde really does ride for Charli. Charli XCX brought out Lorde for a performance of “Girl, so confusing” in New York City ...

Charli xcx brought out all the "good ones" at the New York City Sweat Tour. On Sept. 24, the pop star, 32, had a few ...

The original appeared on the hugely successful album Brat, released by Charli XCX (Charlotte Emma Aitchison) in June, and ...

Lorde thrilled fans when she made an unexpected appearance at Charli XCX's Sweat tour stop at Madison Square Garden in New York City on Monday night. The two artists teamed up for a live performance ...

With September 22 in the rear view, BRAT Summer is officially, technically over. However, Charli XCX isn't going anywhere.