The brand new Barclays Center in Brooklyn is finally finished and Jay-Z will officially kick off his eight-performance run in his hometown tonight. Before his big performance, he celebrated the opening of the arena with music friends, industry execs, and basketball players at the opening of the new 40/40 Club.  

Those in attendance included Rihanna, Questlove of the Roots, J. Cole, Lyor Cohen, Angie Martinez, Brooklyn Nets' star Deron Williams, and more. Check out the photos above. Also, look out for the Brooklyn Nets as they start their basketball season on November 1 with a game against the New York Knicks.

[via Miss Info]