Welcome to the Big 2-0! Justin Bieber Celebrates His Birthday

He's not a baby, baby, baby anymore.

Justin Bieber rang in his 20th birthday on Saturday and kissed his teen years goodbye surrounded by plenty of love from his friends and family.

The "Believe" singer kicked off his day by blowing out the birthday candles on a cake that read, "Happy Birthday Bizzle." The cute moment was captured in a Twitpic and tweeted out by his Shots app business partner, Johnny Shahidi.

While the Biebs kept the rest of his birthday plans under wraps and chose not to post any photographs to his Instagram or Twitter accounts, he did re-tweet several birthday messages from his nearest and dearest.

Bieber's mom, Pattie Mallette, wrote:

Before following up her birthday message with a funny tweet about her own age.

His dad, Jeremy Bieber, also posted a sweet tweet.

The performer's friends also showed him plenty of birthday love.

The teen dream capped off his day by thanking all of his fans for their birthday wishes.

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