Happy birthday, Justin Bieber - the pop wonderkid turns 18 years old today (01Mar12).

In just a few short years in the spotlight, Justin has turned millions of girls around the world into Beliebers, racked up a truckload of trophies and seen his debut album My World go double platinum.

Not bad for a kid from Canada who was discovered on YouTube! He's got superstar collaborations with Mariah Carey and his mentor Usher under his belt, and with a third album, Believe, on the way, it's clearthe new prince of pop's reign has only just begun.

To celebrate his big milestone, WENN has dug up 10 fascinating facts about the birthday boy himself.

- With an estimated $85 million (?53 million) net worth, Justin isone of the richest teen stars in the world.

- He may be romancing Disney queen Selena Gomez, but it was a snake named Johnson who he brought as his date to the 2011 MTV Video Music Awards.He later auctioned the baby boa constrictor off for charity.

- Justin spares no expense when it comes to Selena - he once rented outLos Angeles' Staples Center so they could watch Titanic by candlelight, and even gave her a J-shaped diamond ring on Valentine's Day (14Feb12).

- Usher handed him the keys to a Range Rover before he could even drive, and now Justin's enviable collection of cars includes a Ferrari, a Batmobile-inspired Cadillac and a Lamborghini.

- His love of music began early - Justin started on a drum kit aged two, taught himself to play piano and trumpet, and was busking with a guitaron the streets of Ontario by the age of 12.

- He is a big fan of tattoos and has Jesus' face inked on his calf, a bird on his hip and a Hebrew etching on his rib cage.

- A strain of cannabis sold in Canada was named JB Kush after Justin, while an 11-year-old girl in Texas won a competition to rename a street Justin Bieber Way.

- After cutting his hair in 2010, Justin auctioned a few strands for ananimal-rights charity.

After 98 bids, the lock sold for $40,668 (?25,400).

- Justin made his acting debut playing a troubled teen on TV drama CSICrime Scene Investigation - but fans were furious when he was shot in the chest and killed off.

- He shares his birthday with singer Ke$ha, Spanish actor Javier Bardem, filmmaker Ron Howard and The Who's Roger Daltrey.