Of course, Kylie doesn't have to say or do anything to start them, but this time, it was actually one of her Instagram posts that got the party started.
Along with the paparazzi photo below, the 18-year-old included the caption, "hey lil tummy," and that was all it took for the speculation to start.
So many questions, not enough answers: Why did she write "hi lil tummy" when her stomach is totally flat? Why does she have her hand over her stomach, which is an instinctive thing that pregnant women do? And given that the paps took a whole bunch of photos of her that day, why did she choose THAT shot and use THAT caption?
"Is this a prego announcement?" one fan asked. "Aka she's preggers," another commented. "Pregnant?" someone else wondered.
Of course, we don't think Kylie is pregnant, but we don't see this "lil tummy" she's talking about, either. Unless "lil tummy" is the new word for perfect abs!
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Gallery | Kylie Jenner Revealing Her Inner Beauty