Charli XCX Boston tour stop with Troye Sivan had brat fans sweating

Charli XCX may have owned the summer, but Sivan’s equal participation on this tour is well-deserved. The Australian heartthrob reached a creative peak last year with “Something to Give Each Other,” pairing his sweet, melodic vocals with the most driving and joyfully sensual music of his career.

During live performances, Sivan acted like the leader of the most homoerotic boy band in the world. He mastered the synchronized dance moves with his six muscular backup dancers just as well as he found increasingly creative ways to simulate intimacy with them. While his delivery exuded sexual bravado, the songs themselves often brought a more sensitive side to the fore, with mid-tempo grooves like “What’s the Time Where You Are?” and moody ballads like “Rager Teenager!” filled with an earnest, amorous longing.

In stark contrast to Sivan’s charmingly offensive personality, Charli XCX played the role of the sassy iconoclast, complete with rock star sunglasses. Whether she was aggressively flailing her limbs, banging her head, writhing on the floor, or simply strutting down the runway, her solo dance moves felt rougher than Sivan’s, even if they were probably just as deliberate. This carefree attitude meshed well with the self-assured hedonism of Brat bangers like 360 ​​and Von Dutch. But just like on the album, the brief moments in which Charli gave XCX a glimpse of the real person with complex feelings behind the icon (“Sympathy is a Knife,” “Girl, so confusing”) provided a welcome reprieve before the next Club classics.

Shortly after the dynamic duo closed out the main set with their sparkling ode to millennial nostalgia “1999,” Charli I Love It.” After two more Sivan songs, he and Charli

CHARLI XCX & TROYE SIVAN: SWEAT

With Shygirl

Saturday at TD Garden