It was this summer'''s most talked about wedding ... and then breakup. Hugh Hefner, the world'''s most famous bachelor, and Playmate girlfriend Crystal Harris were all set for their lavish fairy-tale wedding at the Playboy Mansion in L.A. last month. But after months of planning and just days before the high-profile event, Harris made the shocking decision to not marry Hefner. As news of the separation quickly broke around world, questions, speculation and rumors of scandal began to spread. Now, only Lifetime has the intimate look at the events and conversations that led up to the breakup with Hef'''s Runaway Bride, a one-hour special including new and exclusive interviews with both Hefner and Harris about the end of their relationship.