Kris Jenner posted on Instagram a cute photo showing the tremendous height difference between two of her daughters.

"Not sure how this happened but I gave birth to both of them ... #legs #love #familyfun #beautycomesindifferentshapesandsizes #blessed," Jenner captioned the image of 36-year-old Kourtney Kardashian and 19-year-old Kendall Jenner.

The siblings are seen wearing matching, white, button-down shirts, with no pants. Jenner -- the taller of the two -- is also standing in sky-high heels, while Kardashian is barefoot, which makes Kardashian look all the more petite.