The twenty most excited Beliebers at last night's Justin Bieber concert at the Pepsi Center

Say what you will about the Biebs. He's got a strong, massive and devoted following, and last night at the Pepsi Center, they all came out in force with signs and smiles for miles. Eric Gruneisen braved the crowd and brought back a ton of photos, all of which we've posted in our full slide show. Keep reading to see the twenty most excited Beliebers.

See also: - Slide show: Bieber and Beliebers at the Pepsi Center - Photo: Missy Franklin and Justin Bieber, together again for the first time - Five things Justin Bieber should know before getting blunted in Denver

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