HARLEY QUINN HOLIDAY SPECIAL #1 Written by Amanda Conner and Jimmy Palmiotti Art by Mauricet, Brandt Peters, Darwyn Cooke, Dave McCaig, Paul Mounts, and Dave Stewart Published by DC Comics Release Date: December 10, 2014 Oh, Harley. That grey hair. I feel you. Having just passed a major round number birthday (but plagued with Reed…