Kourtney's son jealous?
Kourtney Kardashian's son is reportedly "throwing strops" as he gets used to having cousin North West around.
The reality TV star has Mason, four, and 19-month-old Penelope with her boyfriend Scott Disick, while her sister Kim and her fiancé Kanye West are parents to seven-month-old North.
While the tots get along well most of the time, Mason has reportedly struggled to adapt to having a cousin.
"He used to be such a little angel, but he's got really naughty - over Christmas he took one of her Christian Dior booties and hid it in the garden. Kim went nuts," an insider laughed to British magazine Heat.
Kim has previously gushed about how well the children get on, saying Penelope and North are already best friends. Although the little ones enjoy playing together, Mason can't help getting an attack of the green eyed monster at times.
"Mason is just like any other kid - struggling with the attention Nori is getting and chucking strops to deal with it," the source explained.
Kim has previously spoken of the huge amount of designer gifts her daughter has received. Among them was a set of clothes from Stella McCartney, including a jumper with a rabbit on the front and matching mittens and a blue polka dot onesie with built-in tutu.
She has also been given two pairs of shoes from Giuseppe Zanotti. One was a pair of black seemingly velvet pumps with jewel detail on the toe, while the other was a pair of pale pink booties with fringe detail.
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