Imagine :Kourtney Kardashian 'furious over allegations Scott Disick is not Mason's biological father'

This isn't the first time the Kardashian-Jenner family has been hit with questions of paternity.

Now Kourtney Kardashian is on the defensive over claims Scott Disick is not the biological father of their toddler son Mason.
The 33-year-old reality star has been asked to allow three-year-old Mason to undergo a paternity test.

'Furious': Kourtney Kardashian is angry over a male model's 'outrageous' allegations that he, and not Scott Disick, is the biological father of her three-year-old son Mason

The request was made by male model Michael Girgenti, who claims he and Kourtney slept together nine months before Mason was born, In Touch is reporting.
During that time in March 2009, Kourtney and Scott, 30, were apparently on a break.
But a legal representative for the Kourtney & Kim Take Miami star has branded the Chicago native's allegations 'preposterous and an outrageous lie.'

On the defensive: Kourtney and Scott, seen here with Mason in 2011, have been together for five years, but now are at the center of a new paternity scandal

Who's your daddy? Kourtney has been asked to allow Mason to undergo a paternity test by Michael Girgenti, 26, who claims he and the reality star slept together nine months before her son was born

Wondering: Michael says he saw photos of Mason and began to wonder, adding, 'I would definitely want to acknowledge Mason if he's my kid'

The legal rep insisted Kourtney, who also shares daughter Penelope, nine months, with Scott, never gave Michael her contact details after they briefly met at a photo shoot and never came into contact with him again.
Michael, 26, 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.'
This is not the first time the extremely wealthy Kardashian family has been confronted by allegations of paternity.

Photogenic: Kourtney and Michael met on a photo shoot in 2009, but the star's attorney says there was no further contact after that

Close encounter: Michael says he and Kourtney were intimate and that she and Scott had briefly split

Kourtney's younger sister Khloe, 28, has had to regularly deny rumours that their late father Robert Kardashian was not her biological father.
Their half-sister Kylie Jenner, 15, also recently hit back at reports that her father Bruce Jenner may not be her real father.
Last month Kylie shared her disgust in relation to the rumours with her fans on Twitter, writing: 'Yes, my father is my father and no my parents aren't getting a divorce.
'You guys can't believe any of these magazines. It's all bulls**t.

Rumours: Khloe and her half-sister Kylie have both been the target of paternity claims, which they have vehemently denied

'And even though I don't let these stories get to my head. Imagine you at 15 & someone telling you your father isn't your father.
'EWWWW people disgust me. You're all pathetic.
'Wait. But you're ACTUALLY pathetic. Going after a 15-year-old and telling her father isn't her father. Like WHAT? Are you insane?
'This makes me so mad. And I'm not taking the time to write all this because this hurts me. I'm writing this for the other teens my age.'

Mother-of-two: Kourtney gave birth to her and Scott's daughter, Penelope, in July; the couple was seen out and about in Calabasas, California on March 16