Chris Brown spent Labor Day weekend in Vegas with girlfriend Karrueche Tran and Christina Milian. But Paul “DJ Pauly D” DelVecchio tempted fate at the Hard Rock Hotel’s Rehab pool party when he spun a medley of Brown’s hits as well as songs by his ex Rihanna and her once-rumored beau, Drake. But Brown, who had a bottle-tossing fight with Drake earlier this summer, showed no ill will. “He was dancing in the DJ booth and doing shots of Patrón,” a spy said. “Everyone had a good time.”