Keeping Up With The Kardashians star Kourtney Kardashian announced the results of her son Mason's recent paternity test.

Kardashian said a statement to E! News that she is "setting the record straight" that Scott Disick is her three-year-old son's biological father.

"After three-and-a-half years of rumors and lies being spread by an individual I met briefly at a photo shoot, I am setting the record straight that Scott is Mason's father.  While it saddens me to have to address these ridiculous lies--especially when the truth was never in doubt--this story must be put to rest."

Kardashian's announcement debunks the claim made by male model Michael Girgenti which he insisted that he is Mason's natural father.

Girgenti told InTouch Weekly in March that he slept with Kardashian in March, 2009--nine months before she gave birth to Mason on Dec. 14, 2009. He said they met after they posed alongside each other for 944 magazine in August 2008.

Girgenti later filed a request for joint custody on Aug. 8 in a bid to force the mother-of-two to have Mason take a paternity test. TMZ obtained a copy of Girgenti's petition filed in Los Angeles County Superior Court. Girgenti wrote he had "unprotected vaginal sex" with the reality star and he "ejaculated inside [her] vagina" in his Glendale home.

Kardashian's attorney, Todd Wilson, responded to TMZ's report. He alleged that Girgenti is fraudulent.

"This individual has been selling false and fabricated stories to the tabloids for years about Kourtney Kardashian and her son, Mason," Wilson told the website, adding, "Scott Disick is Mason's father."