Kourtney Kardashian is facing a lawsuit from model Michael Girgenti, who claims to be the father of her three-year-old son Mason.
The lawsuit documents the alleged relationship between Kourtney and Michael, which he claims heated up in March 2009, when she told him her relationship with Scott was "on the outs" and "she wanted to hang."
Michael claims they had full sex and as soon as she had given birth to Mason - born on 14 December 2009 - he tried contacting her.
He told In Touch magazine: "After [Mason] was born, and I saw photos of him, I began to wonder.
"I would definitely want to acknowledge Mason if he's my kid - he deserves to know his real father."
Kourtney has yet to comment on the allegations.