LOS ANGELES (Reuters) - TV reality star Khloe Kardashian is in the running to become a host of "The X Factor," the singing contest's creator Simon Cowell said on Tuesday. Cowell told talk show host Ellen DeGeneres that Kardashian, 28, one of the three adult sisters of the wealthy California socialite family, was one of many people who had auditioned for the role, and had impressed him. "It could ...