I was thinking about this as I watched Charli and Troye Sivan ’s joint Sweat Tour hit absolute peak time with Lorde’s New York cameo. It had been a couple of years since Lorde appeared on stage in New York—though she was spotted at Clairo’s New York show last week,

Charli XCX and Lorde performed “Girl, so confusing” live for the first time at Madison Square Garden during the Sweat tour with Troye Sivan in New York City on Tuesday, 23 September. Fans screamed as the New Zealand musician was brought on stage to sing the track,

The original appeared on the hugely successful album Brat, released by Charli XCX (Charlotte Emma Aitchison) in June, and fans immediately speculated that the song – which details an awkward relationship with another celebrity – was about Lorde (Ella Yelich-O’Connor).