Kourtney Kardashian has reportedly hired a lawyer after splitting from Scott Disick.

Did Kourtney Kardashian Kick Scott Disick Out Of Their Home?

After years of turmoil, the Keeping Up With The Kardashians couple has reportedly called it quits, and now, according to a report by Radar Online on Monday, a custody battle over their three children, Mason, Penelope and Reign, may be looming.

"Kourtney has already hired a lawyer to make sure she gets primary custody of all of her children," the source told Radar Online. "After Kourtney saw [Disick] partying with these other women she knows now more than ever that she is done once and for all. That was the nail in his coffin."

Scott Disick Got Caught Getting Cozy With His Ex-Girlfriend In Monaco

Kardashian and Disick have dated on and off for nearly a decade, and while the reality star and mother of his three children appears to have wanted the relationship to last in the past, she has since decided it is in her best interest to move on.

Kardashian "does not think she will have any problems with getting sole custody because it is apparent that Scott is back partying," the source continued. "It is all really sad, but Kourtney is stronger than ever and will do whatever it is necessary to make sure her children are hers and that they are safe."

E! News reported Kardashian and Disick's split, claiming Disick has been on a month-long party binge, which included an outing with ex-girlfriend, Chloe Bartoli.