Justin Bieber -- no longer a teenager -- and to celebrate that he blew out candles on a cake that looks like it was made for child.
Bieber -- or according to the cake, Bizzle -- turned 20 Saturday morning ... and he wasted no time kicking off the celebration.
Wonder if he wished for a better plea deal?
I'm 20 Today
And It Really Blows
3/1/2014 7:59 AM PST BY TMZ STAFF
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