Kourtney Kardashian and Scott Disick's son Mason seems to be a chip form the old block! Scott Disick, 30, is habitually not a happy camper when the spotlight's not directly on him. So, it shouldn't come as much of a surprise that his 3-year-old son Mason is not too excited about cousin North West stealing his space.

Kourtney Kardashian, 34 told People magazine at the Los Angeles premiere of "Thomas & Friends: King of the Railway" on Sunday. "We never really had cousins that were close in age." And also revealed that Scott's son misses having Aunt Kim Kardashian all to himself.

"I think he gets a little jealous because he and Kim were so close and so he doesn't understand because he's not the big center of attention," she told People.

Kim doesn't know, how to type of deal with this situation?.

"[Kim's] just like [to Mason] 'You don't like me anymore?'" she added. "I think she gets confused and doesn't know how to handle it. He's like, 'Why don't you like me anymore?' cause he sees her with the baby."

But the solace is that Kourtney and Scott's 14 months old daughter Penelope, is "just in awe" of her new cousin North West.

"Whenever [Penelope] sees [North] and, you know, the second she walks into the room, Penelope gets so excited," she said.

If Aunt Kim and Mason can get over their differences, then only the three cousins (Mason, Penelope, and North West) should become fast friends.

"We never really had cousins that were close in age ... so I'm excited," Kourtney Kardashian added.

Sibling rivalry should be tackled wisely as "the question that's probably uppermost in the child's mind is: Why do my parents want to have a baby? Don't they love me? And if t hey love me, why do they need another one? Aren't I enough? Imagine for a minute yourself in a similar situation. Your husband comes home and says: "Honey I love you so much, I've decided to go get another wife so I can have two." How would you feel? As quoted by Lawrence Balter.

Watch Kourtney Kardashian, Scott Disick, son Mason, and daughter Penelope enjoying time together:

www.youtube.com/user/papoinews