The mother-of-three also revealed that she accidentally shared the news to a few people at her mother, Kris Jenner's extravagant Christmas Eve bash last month.
"I got drunk at our Christmas Eve party and told some people. I can't remember who I told because I never get drunk," she said.
While Kim was not willingly to share the due date on Andy's show, an insider told E! News, "The surrogate is well into the pregnancy. She is due in May and everything looks good."
What do you think of Kim's drunk baby #4 confessions? Let us know in the comments!