Kourtney Kardashian and Kylie Jenner Decorate for Halloween on First Day of October: 'Tis the Season'

Kourtney Kardashian/Instagram

Kourtney Kardashian is getting into the spooky spirit right on time this year, along with her sister Kylie Jenner.

Kardashian, 42, posted a collection of festive photos to her Instagram on Friday, on the occasion of the first day of October.

The first image in the Halloween-themed gallery saw the reality star's home entryway flanked by two enormous skeleton figures.

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Another picture was a selfie of the reality star, wearing a skeleton costume along with a photo filter that gave her devil horns.

Other images showed an elaborate and macabre table spread, along with a brief video clip showing the words "Men quake in fear!" on a movie screen.

Kourtney Kardashian/Instagram

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Kourtney Kardashian/Instagram

A few hours later, Kardashian's younger sister Jenner, 24, posted her own mood board of October images, starting off with a bowl of mini pumpkins.

The Kylie Skin mogul also showed off some Halloween-themed cupcakes, the results of baking with her daughter Stormi Webster, 3 (on her Instagram Stories, Jenner noted, "We are really excited over here #Oct1").

Kylie Jenner/Instagram

Kylie Jenner/Instagram

She also showed off her own decorations on a sideboard, along with some witch figurines and a candle that said "Hello Fall."

Kardashian and Jenner aren't the only celebrities who love spooky season –– many others, notably Vanessa Hudgens and Heidi Klum –– are big, big fans of Halloween as well.