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.
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.'
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.'