Listen up, ladies -- "Bieber fever" is hardly a new phenomenon. For every fresh-faced teen idol, there have always been hoards of fans chasing them down. Some of these teen sensations have held on to their stardom, some are leading quiet lives. Either way, the following men were just boys when they commanded the world's attention and stole the hearts of screaming girls everywhere. But what are they doing now?
Jesse McCartney -- whose break out role on "All My Children" happened at the young age of 11 -- wasn't content with merely having an acting career. So, around the start of the new millennium, he joined boy band Dream Street. When his dreams grew bigger than the pop group, the singer-actor went solo. While Jesse McCartney's friends were getting their drivers' licenses, he was releasing his first EP. His single "Beautiful Soul" reached No. 15 on the Billboard 200, and he later released "Leavin'," which climbed to No. 10 on the Hot 100. The latter was his highest-charting single.