Pictures: Beyonce, Jay Z, Paris Hilton attend Rihanna's surprise 27th birthday

 Roc Nation threw Rihanna a star-studded surprise 27th birthday on Friday night and it was attended by a lot of celebs including Jay Z and Beyonce, Naomi Campbell, Paris Hilton and her sister, Nikki, Tyrese, Russell Simmons, Vin Diesel, Queen Latifah and more. See the photos after the jump...