Larry King Files for Divorce No.8 (secrets uncovered)

We learned that Larry King has filed for divorce from his wife Shawn Southwick -- the 8th time King's pulled the plug on a marriage.

In the divorce papers, filed moments ago in L.A. County Superior Court, Larry blames the split on "irreconcilable differences."

Larry, 76, and Shawn, 50, were married back in 1997 -- they have two sons together.

Back in 2007, Shawn had bragged about being the only one of Larry's wives to have made it into "the two digits." She is the 7th woman to marry King.

As for the eight divorces -- back in 1962, King divorced a woman Alene Akins ... and then remarried her in 1967 ... before divorcing her again in 1972.

Both Larry King and his newly-estranged wife Shawn say they separated Tuesday ... and we're learning more about the fight over their very expensive homes.
In her divorce documents, Shawn is specifically asking the judge to declare the following her separate property -- their Beverly Hills mansion, a house in Provo, Utah, and a house in St. George, Utah.

Larry transferred these home to Shawn several years ago, after Shawn confronted him about having a relationship with her sister, Shannon -- a claim Shannon denies. We're told Larry made the transfer to show Shawn he was committed to the marriage.

In Larry's legal docs, he's asking the judge to void the transfers ... though he does not state the legal grounds.

In addition to the 3 properties, Shawn is asking the judge to declare all the furniture and artwork in the homes as her separate property.