The youngest of Kardashian and Kanye West’s kids went all-out for Halloween this year, while Chicago was a little less enthused

Kim Kardashian’s son Psalm, 4, and daughter Chicago, 5, pose in their Halloween costumes. Photo:Kim Kardashian/Instagram

Not everyone in Kim Kardashian’s house was getting into the spirit of Halloween this year.

The SKIMS founder, 43, shared photos of her two youngest kids — daughter Chicago, 5, and son Psalm, 4 — in their respective Halloween costumes on Instagram Saturday, and she revealed that one of her children isn’t the biggest fan of the holiday.

Psalm rocked two all-out costumes in the photos Kardashian shared, first as a ninja turtle with his face painted green and a full-body turtle costume, and then as a member of the Los Angeles fire department, with his own personal firetruck as mode of transportation.

Kim Kardashian’s son Psalm, 4, dressed up as a ninja turtle for Halloween.Kim Kardashian/Instagram

Chicago, on the other hand, was less inclined to get into the Halloween spirit. Kardashian’s youngest daughter opted to go as a kitten and a ghost this year — and both costumes were as low-key as possible for the 5-year-old.

For her kitten costume, she wore a pair of sweatpants and a white tank top, fluffy pink kitten ears, a button nose and whiskers painted on her face.

Kim Kardashian’s daughter Chicago, 5, dressed up as a ghost for Halloween.Kim Kardashian/Instagram

Chicago’s second costume was a little more thought out — a white dress with a poofy skirt and sheer sleeves, complete with a pair of white cowboy boots. The youngest daughter of Kardashian and ex-husband Kanye West finished the look with some white eyeshadow and glitter on her cheeks.

“The cutest Ninja Turtle and Firemen and a little ghost and kitty who doesn’t like to dress up for Halloween 👻 🤣,” the Kardashians star wrote on Instagram.

Kim Kardashian’s son Psalm, 4, dressed up as a fireman for Halloween this year.Kim Kardashian/Instagram

Kardashian’s other two kids — daughter North, 10, and son Saint, 7 — also went all-out for Halloween this year.

While her older daughter rocked multiple different show-stopping costumes, Saint opted for one killer look as a zombie version of soccer player Neymar Jr.

“Saint as Zombie Neymar Jr.,” she wrote on Instagram as she shared photos of her older son covered in fake blood and wearing a ripped version of Neymar’s Saudi Pro League soccer uniform.

Kim Kardashian’s son Saint, 7, dressed up as a zombie version of soccer player Neymar Jr. for Halloween.kim kardashian/instagram

North rocked several looks for Halloween this year, including two that she coordinated with her cousin Penelope Disick: a Princess and the Frog and Princess Peach look, and a group Cheetah Girls costume that got the stamp of approval from one of movie’s stars Adrienne Bailon.

On other nights, the oldest of the Kardashian-West family honored both of her parents individually.

She dressed up as her rapper dad, channeling his 2007 album Graduation with a “Dropout Bear” costume. She later matched her mom as the two recreated Clueless’ Cher and Dionne in coordinating plaid looks.

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Her series of costumes came days after she posed for her first-ever magazine cover for i-D and reflected on what is the best thing about being North West: playing basketball, going to Halloween Horror Nights and, well, “everything.”

When asked how she would describe herself, North said, “The Best Ever,” adding that basketball is a “lifestyle” for her, “not a hobby.”

She also shared her future plans to take over her parents’ businesses. “One day I want to own Yeezy and SKIMS, and I want to be a business owner.”