Kim was spotted rocking her new long pink hair with a tan coat, gray leggings and boots at Haneda Airport, while Khloe donned a long puffy camel coat, black leggings and sneakers, keeping her blonde locks in French braids.
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Khloe, who confirmed her happy news back in December, shared some shots from the journey on her Instagram story, posting a Boomerang clip that declared she was "8 months baby bumpin" on her trip to Japan.
On Sunday's KUWTK, Khloe also shocked her sisters with the revelation that she plans to deliver her baby in Cleveland, Ohio, where Tristan lives and plays basketball for the Cavaliers.
See more on Khloe’s forthcoming bundle of joy in the video below.