LARRY KING agreed to have a baby with his wife’s sister!

That’s the shocking revelation from a family friend, who reveals that during the 76-year-old talk-show host’s shocking affair with his sister-in-law, the pair made plans to start a family.

Both Larry and his wife Shawn – who had her own affair with their sons’ baseball coach – have filed for divorce.

But in a strange twist, it looks like Shawn’s sibling rivalry with her sister Shannon Engemann could end up saving her marriage.

LEARN the truth about the secret baby planned with Larry and how the seeming impossible could easily be accomplished – ONLY in the new ENQUIRER – on sale now!