Penelope Disick
Photo: Courtesy Instagram

On Saturday, North West and Penelope Disick celebrated their birthdays luau style—complete with leis and colorful skirts—with a Moana-themed party. The four-year-old cousins were only born three weeks apart, so it was a must for the two to have a joint summer celebration.

The tots went all out in costume. North wore a tropical printed two piece, flower crown and crochet belt; while Penelope channeled Moana’s outfit as she posed for a picture with Sophia, Larsa Pippen’s daughter.

See their festive looks below:

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And since the Kardashians are not ones to party subtly, the birthday bash also included a pig petting zoo, shaved ice, a bounce house and more. The tots not only got matching Pomeranian puppies, but also matching three-tier Disney-themed cakes.

Penelope Disick
Photo: Courtesy Snapchat

It seemed everyone had a blast, parents included. Kourtney Kardashian brought out her inner child when she rode a mechanical surfboard in a bounce house with two of her friends. “The only three grown-ups (sort of) to go on,” she captioned the photo.

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In another snap, Kourtney posed with friend Stephanie Shepherd and some shaved ice.

Meanwhile, North showed off her dance moves in front of her family and friends.

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And Penelope was all smiles as she hung out with a Moana look-alike in her cheetah print bathing suit. She toted her new puppy and wore long brown clip-ins for the event.