Pretty epic! Wish we had been there to witness it first hand.
Rihanna's team just posted up this video from RiRi's stop in New Jersey last month on her Loud Tour. Girl surprised her fans with a very special guest and a very special duet.
Check out the video (above) to watch RiRi Run This Town with the man himself, Jay-Z! (above)
Sizzle! Super hawt!!!