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, ...

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

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 ...

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 ...

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

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 ...

During Charli XCX's stop at Madison Square Garden with Troye Sivan for their Sweat tour, the "Von Dutch" singer was joined by Lorde and Addison Rae.

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.