Does anyone even remember True Romance? Charli XCX’s only full-length album to date was released just last year. But between her roles on radio staples like “I Love It” and “Fancy,” her upcoming slot opening for Katy Perry, and the multiple big singles from her forthcoming album Sucker, 2013 feels like a decade ago when it comes to this 22-year-old rising star. Playing a late show last night to a sold-out 9:30 Club, Charli XCX plowed through a setlist evenly split between older songs (yes, including the Icona Pop and Iggy Azalea hits) and cuts from Sucker. Somehow, everyone in the crowd seemed to know all the words to every song, even the brand-new ones.