Kourtney Kardashian
Kourtney Kardashian already has two children with boyfriend Scott Disick. CeleBuzz.com

Kourtney Kardashian is reportedly pregnant with her third child.

According to Us Weekly the reality star, who is the older sister of Kim Kardashian, and long-time love Scott Disick will welcome the new addition early next year.

"She is only a few months along, and it was planned. Kourtney wants to have a handful of kids like her mum" a source told the magazine.

The couple, who have been dating since 2007, are already parents to four-year-old son Mason and daughter Penelope, who turns two next month.

Kardashian, 35, previously stated that although she was able to juggle work and being a mother, her family would always be her number one priority.

"Nothing comes before my children. I find that putting everything else in order of importance also helps to get everything done," she told Mini magazine in March.

It is thought that Kardashian and Disick have decided not to find out the gender of their unborn child.

In 2009 Mason's birth was filmed and aired during the 4th season of Keeping Up with the Kardashians but it looks like the pair may be taking a more private approach for this pregnancy.

"They don't know the gender yet. They just want the baby to be healthy," another insider added.