Charli XCX Reveals How Lorde Reached Out for 'Hunger Games' Soundtrack

On Tuesday, Oct. 28, at 6 p.m. PT/9 p.m. ET, Yahoo Live will live stream Charli XCX's Yahoo On the Road concert from the Cat's Cradles in Chapel Hill, NC. Tune in HERE to watch!

Charli XCX is behind the catchy song "Boom Clap," and now she's gracing the cover of Billboard magazine. The 22-year-old has a rebel anti-pop star vibe, and The Insider With Yahoo correspondent Keltie Knight got some juicy inside info from 2014's breakout star.

"I don't feel like I fit in at all, but I like that. I don't really want to be like everyone else," Charli said.

Charli's songs have sold 14 million copies in the past 18 months, and she's not letting anyone tell her what to do. "It's not fun for me to be bossed around by people who are a lot older than me who don't really understand what's going on in my own brain."

 And Charli XCX has recently collaborated with Lorde for the Hunger Games: Mockingjay soundtrack song, "Yellow Flicker Beat." Charli said, "She actually messaged me on Instagram, I didn't even know you could even message people on Instagram. So I think she thought I was ignoring her for ages. I never got back to her, then we figured it out."