Look out, world. Justin Bieber is legal. The pop star turned 21 years old on Sunday and celebrated just like any young millionaire on the verge of adulthood might — by popping bottles on a private island.
Bieber rang in his 21st in the Caribbean with a handful of his closest friends and double-fists of alcohol, according to TMZ. And when he wasn't indulging in champagne and tequila, he was reportedly cozying up to model Yovanna Ventura. 
The pop star commemorated his big day by firing off a series of tweets that demonstrate how much he is loving life right now."Grateful to be alive!!!" he wrote in one. "I love everybody! #21," said another.
Happy Birthday to the Biebs!
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(Photo: Ouzounova/Splash News)