Why? According to one source, she’s intentionally keeping a low profile because “she wants to keep this one aspect of her life private.”
“She’s very happy about the pregnancy, but she doesn’t want to share this with the world,” they told US Weekly. “Her not being out is strictly personal preference… she spent her adolescent life on television and has been famous for over 10 years now.”
“If this is the first thing she wants to keep to herself, she should be allowed that,” they add. “If you knew Kylie – she can be very stubborn. When she makes her decisions, she sticks by them. This is a decision she made early on in her pregnancy and she’s sticking by it.”
Of course, the alternate view suggests she’s simply waiting to break the news on TV – the new trailer for the next eps of Keeping Up With The Kardashians hints that the upcoming two-part special is "full of Kardashian surprises.” Is Kylie’s baby news one of them?