Fresh off the release of his brand new album X, Chris Brown and his boo Karrueche hit the nightlife scene to celebrate. The on-again duo were spotted partying with Hennessy V.S at Emerson nightclub in L.A. last night, along with Pusha T, Kevin Hart, DeRay Davis and more. Both Breezy and Pusha even hopped on the mic to perform as well! Check out a few pics from the night in the gallery.