Khloe Kardashian and Mario Lopez are reportedly finalizing deals to co-host X Factor.  TMZ.com reported that the two are definitely joining the show and their involvement will be officially announced later this week. They would make their debut during the live shows in November.  As for why Simon Cowell picked Khloe? A source told Us Weekly, "Simon liked her spunky personality!"  Simon recently admitted that Khloe was in the running, telling Ellen DeGeneres, "We have screen tested a load of people. . .It could be a Kardashian. I think that would work. I'm quite a fan of not putting [experienced] hosts on this show. Because I think it's going to give it a different dynamic. So we have to find people who have a great chemistry, but Khloe is definitely up there in running."