MTO WORLD EXCLUSIVE: Beyonce To Do ONCE IN A LIFETIME Performance At The MTV VMAs . . . You Won't BELIEVE Where She's Performing!! (PICS)

Original: just got some EXTRA EXCLUSIVE insider information from backstage at the MTV VMAs tonight. Beyonce will be performing her hit song "HOLD UP" to open the show . . . and she's going to be performing OUTSIDE THE VENUE.

We're told that we should expect tens of thousands of people to show up - and watch a FREE BEYONCE SHOW on 33rd Street, outside of Madison Square Garden.

And we've got some EXCLUSIVE PICS OF THE SET:

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