"Pumpkin patchin'," Kourtney captioned a snap of herself and Chyna, who sported black leggings and an Adidas jersey.
The pair also posed for a selfie, showing off their black mirrored aviator sunglasses.
Kourtney has been getting into the Halloween spirit all week. The 37-year-old reality star shared photos of her spooky home decorations earlier in the week, which included black-and-white colored pumpkins, skeletons, and creepy masks.
Last weekend, Chyna, who is due in just 4 weeks, took a trip to Universal Studio's Halloween Haunted Nights with fiancé Rob Kardashian. Chyna wore a black “S.W.A.T” team jacket for the occasion and shared a snap of the spooky California theme park.
On Wednesday, the model also took to Instagram to show off her growing, posing in a cream crop top and matching pants.
Hear more on how Rob and Chyna are preparing to welcome their bundle of joy in the video below.