Dates on Beyonce's the Mrs. Carter Show world tour have been selling out faster than you can say "Blue Ivy."  But if you're one of the diehards who searched for tickets and came up empty-handed, there's still hope. 

Bey has added a fourth and, supposedly, final New York area show to her sold out North American trek.  Tickets for the newly added August 5 concert at Brooklyn's Barclays Center will go on sale March 4 at 10 a.m.  Members of Beyonce's BeyHive fanbase can get in on a presale, taking place this Wednesday at 10 a.m.

Beyonce already has two other Barlcays shows lined up, along with a July 26 concert in Atlantic City, NJ.

After she wraps up things in the States, Beyonce is off to Rio de Janeiro, Brazil, where she'll headline the world's largest music festival, Rock in Rio.  The performance will take place September 13, on the first day of the Rock in Rio showcase.

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