There will be a new addition to the Kardashian-Disick Christmas party this year, Kourtney Kardashian has given birth to their new son. As one of the stars of E’s ‘Keeping Up with the Kardashians,’ Kourtney and Scott Disick have had their lives thoroughly documented as they prepared for their newly-born third child.

The newborn will share a birthday with Mason, the couple’s other son, who just turned five years-old.

The family now has the newborn, Mason at five and sister Penelope who is two years-old. At 35, Kourtney has been filling the role of mom quite nicely as she juggles her television career and ever-popular sisters. Kourtney let it slip that she was having a boy on a previous episode of ‘Kourtney and Khloé Take the Hamptons,’ which may have been planned to help boost ratings on the show.