The YouTube sensation-turned-mega-star known as Justin Bieber has exploded like a bomb—only instead of crushing homes and buildings, the Biebs is shattering the hearts of teenaged girls across the globe, one platinum single at a time.

What started as 10,000,000 views on YouTube (yup!) has turned into utter mayhem. In the past year, three separate Justin Bieber concerts were shut down due to overcrowding. Last month, after 4,000 fans showed up—many of whom camped out overnight— at Sydney Harbor in Australia, police pulled the plug on the event just hours before he was to perform. “I am so sorry that it got out of control,” the 16-year-old later said on Australian television.

Last week, Kim Kardashian, 29, got serious hate mail from raving jealous Bieber fans after he Tweeted a photo of himself with her at the White House Correspondents dinner with the message, "Look, it's my girlfriend!" Moments later, Kardashian tweeted in response, "I officially have Bieber fever!!!" When Kim started receiving actual death threats from his fans, Justin took to his Twitter page once again to quiet the enraged blood-thirsty girls: "Ladies calm down. [Kardashian] is a friend. A very sexy friend but a friend. No need 4 threats. Let's all be friends and hang out often." What a peacemaker!

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Jump aboard the Bieber bandwagon and find out some fun facts about the young icon – but be careful … Bieber Fever is contagious!