At the time, Kourtney had son Mason, now 15, daughter Penelope, now 12, and son Reign, now 10, but little did Kim know, Kourtney would go on to have a fourth child, son Rocky, 1, with her new husband, ...

The tradition originated with matriarch Kris Jenner hosting parties on Christmas Eve that all her kids remember fondly. Kim and her sister, Kourtney Kardashian, later took after their mother, Kris, ...