The Keeping Up With The Kardashians star took to Twitter on Monday night (29 December) to provide an explanation for why she prefers a pout to showing off her teeth in photos.
Alongside two images proving she CAN and DOES smile, the 34-year-old wrote: "See, I do smile… even laugh on occasion. Not too often though because it causes wrinkles."
We're pretty sure she is joking!
Kim's black and white pictures were taken during mum Kris Jenner's annual Christmas Eve party at the Kardashian home in LA.
The whole Kardashian-Jenner clan appeared to be in attendance, including Kim's elder sister Kourtney, 35, who gave birth to son Reign Aston Disick on 14 December.
New mum Kourtney joined her sisters Kim, Khloe, Kendall and Kylie at the bash, making her first appearance since her son's birth. She's also mum to son Mason, five, and daughter Penelope, two, with long-time love Scott Disick.
Kim attended the glitzy event with husband Kanye and their daughter North, one.
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