Khloé Kardashian revealed that she jokingly asked her brother, Rob Kardashian, if he “donated sperm” due to his striking resemblance with her son, Tatum. “To me, [he looks] just like my brother. And my brother's one of my favorite people,” Khloé, 39, said about Tatum, 21 months, during the Tuesday, May 7, episode of the Read this story