At London’s O2 Arena on Thursday night, “Brat” wasn’t just a word, or the name of Charli XCX’s wildly successful album — it was a way of life. Looking out at the sea of people who packed the sold-out show,

What began as excitement for Charli XCX’s breakout album Brat, which came out in June, became fused with the excitement surrounding Kamala Harris’s entry into the presidential race in July. But an autumnal reckoning lay ahead.

Charli XCX turned London’s O2 Arena into a dazzling celebration of music, fashion, and self-expression on Thursday night, as she delivered an electrifying performance to a sold-out crowd.