Robert Kardashian declared Khloe as his biological daughter in legal documents

A legal document that emerged today shows Robert Kardashian declared Khloe was his biological daughter.

The document have come to light amid claims from two of Robert Kardashian’s former wives – Jan Ashley and Ellen Pierson – that he told them Khloe was not his.

Radar is reporting today that Ellen Pierson is standing firmly by her story – despite strenuous denials from the Kardashians.

Robert Kardashian submitted a document to a judge in 1999 stating he had four biological children – Kourtney, Kim, Khloe and Rob with former wife Kris.

The businessman filed the declaration when he was trying to get his marriage annulled to second wife Jan Ashley saying he didn’t want to have any children with her.

In the declaration, Robert Kardashian says: “I decided that since I already had four biological children, I did not wish to have any more.”

Yesterday, a furious Khloe Kardashian refuted the claims made by Jan Ashley and Ellen Pierson, branding them “disgusting”.

Today, Khloe’s mother, Kris Jenner – who has admitted to having affairs during her marriage to Robert Kardashian – appeared on Good Morning America to refute claims her daughter was fathered by another man.

Kris Jenner said: “It just gets weirder and weirder. I have never heard such c**p in my life.

“I mean, I was there! I gave birth, I know who the dad was.”

The mother went on: “Everything’s good. We’re all good – don’t worry about it,” before adding that Khloe Kardashian’s lighter hair in comparison to her sisters has been a long-running “family joke” regarding her paternity.

Meanwhile, Ellen Pierson has stood by her claims and spoke to Star magazine again to reiterate her side of the story.

Ellen Pierson insisted she had had many conversations with Robert Kardashian – who she married two months before his death aged 59 in 2003 – and claims he told her he was not Khloe’s biological father.

Jan Ashley – who married Robert Kardashian following his divorce from Kris – told this week’s Star magazine: “Khloe is not his kid – he told me that after we got married.

“He just kind of looked at me and said [it] like it was a matter of fact. He said, <<Well, you know that Khloe’s not really a Kardashian, don’t you?>>”

Yesterday, Khloe Kardashian took to Twitter to respond to the claims by Jan Ashley and Ellen Pierson, posting: “The audacity you have to mention my father’s name like this! Should be ashamed of urself! I let a lot of things slide but this one is really low… YOU ARE DISGUSTING! (yes you know who YOU are).”

While Khloe Kardashian has slammed the allegation she has herself questioned if she was adopted on the family’s reality TV show.

Viewers of Keeping Up With The Kardashians did see her question who her parents were in an episode in 2009.

Khloe Kardashian wanted to prove she was not adopted and tested the maternity of her mother Kris Jenner.

While she proved she was Kris Jenner’s daughter she did not compare her DNA with her siblings to prove conclusively that Robert Kardashian is her biological father.