A social media storm quickly brewed, with allegations of "blackface" being hurled Kardashian's way.
"I used an amazing photographer and a team of people. I was really tan when we shot the images, and it might be that the contrast was off.
"But I showed the image to many people, to many in the business. No one brought that to our attention. No one mentioned it."
Other promotional images from the shoot were "changed right away", said the model, who's married to rapper Kanye West, with whom she has two children.
"Of course, I have the utmost respect for why people might feel the way they did. But we made the necessary changes to that photo and the rest of the photos.
"We saw the problem, and we adapted and changed right away. Definitely I have learned from it."