Joel Madden went from the diaper tables to the turntables this past weekend in Las Vegas. The Good Charlotte singer and proud pop of 17-month-old Harlow was the guest DJ at Privé nightclub inside the Planet Hollywood Resort on June 19, accompanied by twin brother Benji and a huge entourage of rocker pals. With pregnant girlfriend Nicole Richie and his adorable tot at home, Joel was on his best behavior, focusing on his tunes and barely glancing up from his set. However, single guy Benji mingled with several beautiful blondes as he sipped cocktails in the club’s VIP area. The posse partied until Joel finished deejaying at 2 a.m.