North West and Penelope Disick Pose in Their School Uniforms With Proud Moms Kim and Kourtney Kardashian

Kim Kardashian and Kourtney Kardashian at amfar gala
Clint Spaulding/amfAR/Getty Images

"Spring Break is over."

These cousins are totally twinning!

Kim Kardashian West shared the sweetest photo of herself and her 5-year-old daughter, North West, posing with Kourtney Kardashian and her 6-year-old daughter, Penelope Disick. "Spring Break is over," Kim captioned the pic of the mother-daughter duos.

In the photo, the two girls are wearing matching uniforms, which include blue-and-white plaid skirts and navy shirts, and both add their own individual styles to the outfits. North is wearing white, high-top Converse shoes and white leggings, while Penelope is sporting a pair of loafers.

Several of Kim's Instagram followers commented on Penelope's shoes in the comments section, noting that the footwear appeared to be pair of $400 Gucci slides. One person who was impressed with the look was Penelope's aunt, Kendall Jenner.

"P is such a little beachy lady," she wrote. 

Katy Perry also commented on the back-to-school pic, writing: "Thank the Lordt."

Penelope and North are more than just cousins, they're best friends. Here's a look at all the times these two were total besties: