Jay-Z & Rihanna celebrate 40/40 club opening

The Roc was in the building as Jay-Z celebrated the grand opening of the 40/40 Club inside the Barclays Center in Brooklyn. Roc Nation artists Rihanna and J. Cole joined their boss Jay-Z at the glamorous celebration, which also brought out The Roots? ?uestlove, Adrienne Bailon, Tyson Beckford, and Lyor Cohen.