Kim Kardashian threw a joint birthday party for Saint and Reign.
The reality star decked her home out in a 'jungle theme' for the two boys so that they could have plenty of fun.
There was no sign of Scott's girlfriend, Sofia Richie, at the bash as he celebrated his family.
Kim spared no expensed as she did themed food and outfits for the kids and their guests to enjoy together.
The birthday boys each had jungle themed cakes with their names and a mini-figures that looked just like them too !
There were also some custom t-shirts with: "Lucky me! It's my birthday" inscribed on the front of them especially for the big day.
The host seemed delighted with her efforts.
"Oh, my gosh, how cute are these," she raved as she shared a video of the dessert table, which featured animal-topped cakes as well as donuts, cookies and pretzel sticks.
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The 'Tarzan' themed party seemed to go down really well with the kids and adults alike.
North stole the show in a lime green dress as she struck a pose wearing some cool shades.
'You look cool' Reign told his cousin as the pair had a blast together.
Penelope matched the party's theme in an animal-print dress accessorized with a sparkling choker spelling out her name.
At one point Scott balanced her on his shoulders as the pair had a fun time with one another.
The party took pace at Kim's home in Calabasas with decorators being brought in to help with the jungle theme.
Khloe Kardashian jetted in from Cleveland so that she could take part in the celebrations with her family.
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