"Hey, I just met you, and this is crazy, so here's my number..." Chances are, if you own a radio, a television, or know a 12-year-old girl, you probably know how this phrase ends. "Call Me Maybe," Carly Rae Jepsen's viral hit, is officially the No. 1 in the U.S., after dethroning Gotye's "Somebody That I Used to Know" on the Billboard Hot 100 chart. The "Call Me Maybe" craze started in February, when Justin Bieber and his girlfriend Selena Gomez (along with a few of their famous friends), recorded an adorable lip-sync video to Jepsen's infectious pop song. Thanks to Bieber -- and his 21 million Beliebers -- "Call Me Maybe" became an overnight internet sensation. However, now Jepsen has one accolade that not even Biebs could accomplish: Her single is currently No. 1, while Bieber's single "Boyfriend" is holding steady at No. 10. But how did Jepsen get to the top of the Billboard Hot 100 summit? Take at look through our timeline below to see how Jepsen went from a Canadian folk artist to a worldwide pop phenomenon in less than a year.