Wrap your head around this: Justin Bieber’s 2011 net worth was $85 million. He starred in his own concert documentary full-length movie. He has women swooning over him and men lusting over the women swooning over him. He’s the second-most popular person on Twitter, just behind one of the biggest pop icons of this generation, Lady Gaga.

The craziest part of it all? He did it before he could vote on who should run the country, before he could walk into a gas station and buy a pack of Marlboro Lights and before most people graduate high school. Crazy, right? While Bieber, who just turned 18 on March 2, can finally be considered an adult, he’s been living the life of one for the past three years (minus the fact that his mom still gives him just $50 allowance a day). The Canadian singer-songwriter was discovered by manager Scooter Braun on YouTube after his mom put his videos up just to share with family. Quickly, he catapulted to fame and onto the walls of millions of teen girls’ bedrooms.

He’s got 17.8 million followers on Twitter that have brought out the infamous Twitter Whale, shutting down the popular social networking site numerous times. His video for his single “Baby” is the most viewed on YouTube with over 710 million. He added the word “Belieber” into the American language.

Not only is he taking over the musical scene, but the big screen as well. His first movie, Never Say Never, grossed over $30 million in its premiere weekend and went on a 140-date headlining tour last year where girls of all ages needed to see a glimpse of the hair-flip in person. They’re the same girls sending his current squeeze, Disney star Selena Gomez, death threats.

Under the guidance of pop superstar Usher, Bieber has created a whirlwind childhood for himself and a brand that keeps producing – perfume, dolls and even Hallmark greeting cards. Right now, he’s unstoppable and his music – the initial cause of his success – is getting ready to take back the spotlight. He tweeted that the first single from his sophomore album, “Believe,” will be released on March 26.

His debut album, “My World,” topped the U.S. charts and went double platinum. He’s a self-taught musician playing the guitar, piano and drums and at a mere 18 years old, is discovering musicians on his own. He helped launch the career of fellow Canadian Carly Rae Jepson by starring in a video for her first song, “Call Me Maybe.”

In the same breath the world wished this generation’s teen sensation a happy birthday, it said goodbye to former heartthrob, Monkees lead singer Davy Jones. The 66-year-old, who died of a heart attack, was the Justin Bieber of the 1970s.

While Bieber has accomplished much in just three short years, his next challenge will be to stay relevant and keep his poster on the walls of girls everywhere.