More than most artists on pop’s current A-list, the 28-year-old rapper and singer Doja Cat is a child of the internet. Born Amala Ratna Zandile Dlamini, she spent much of her youth making beats and rabble-rousing social media posts. She first experienced viral fame in 2018 when her goofy but surprisingly well-executed novelty song “Mooo!” blew up, and still — even after racking up bona fide hits, including two that ranked No. 1 on Billboard — retains the glint-eyed, anarchic spirit of an internet troll.

Just as screen charisma doesn’t always translate IRL, not every terminally online musician can convincingly make the leap from, say, Instagram Live to the 19,000-capacity Barclays Center, where Doja headlined her first New York City arena show as part of her Scarlet Tour on Wednesday night.

She has been a near constant presence on the charts for almost four years, but as a live performer she is still largely unproven. Her dreamy, disco-inflected breakout hit, “Say So,” was released in January 2020 and, during the pandemic, became a TikTok sensation.