We've been pondering that for quite a while as the Keeping Up With The Kardashians star is rarely seen without a floor-sweeping jacket no matter what the weather.
And now we have an answer!
Writing on her brand new KimKardashianWest.com website, the pregnant star explained: "Long coats to cover my fat arms and ass! It's such a trip how your body grows and changes, and at the end of the day, you have to wear what you are comfortable in and what you feel good in.
"I don't care what the weather is, I will always wear my coats. I am always freezing, so it works out perfectly for me!"
Kim, 34, is pregnant with her second child, due around December.
She wrote on her website that this time around she wants to accentuate her pregnancy figure, rather than hide it like she wanted while pregnant with daughter North, now two. "This time around, I know what I like — plus, I am confident and not trying to hide my bump. I actually want to accentuate it."
Kim and husband Kanye West, 38, have already confirmed baby number two will be a boy.
Her website launched yesterday after months of teasing. It features a mix of content available to view and content hidden behind a paywall, and gives Kim's tips on style and make-up, as well as behind-the-scenes videos and exclusive pictures.
All you need to know about Kim Kardashian:
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