What has probably been the worst year of Justin Bieber's life comes to an end today. The Canadian crooner turns 20, and if the past year has been any indication, the night of revelry will be full of prostitutes, lean, and a variety of struggle rappers with the first name "Lil'." And if he's consistent, his birthday uniform will also be a terrible outfit (or, just as likely, it'll be a birthday suit). Before he's all grown up and potentially locked away, let's take a look back at Justin Bieber's 20 Worst Outfits of All Time.

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