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 ...

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

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

Charli XCX and Lorde performed “Girl, so confusing” live for the first time at Madison Square Garden during the Sweat tour ...

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 ...

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 ...

It's going to take the gays three working days to recover from this The post Charli XCX and Lorde perform ‘Girl, so confusing ...

The “360” singer hosted a star-studded Sweat Tour afterparty Monday night, following her and Troye Sivan’s sold-out show at Madison Square Garden in New York City.