While many fans were completely surprised by the news, some questioned whether or not Jenner was completely telling the truth, saying her lips still seem fuller than they did in her teenage years.
Many of her followers pointed out the 20-year-old was rocking a more "natural" look, as she posed with her friend Anastasia Karanikolaou.
Kylie Jenner gave her fans a dose of surprising news on Sunday, revealing that she has removed her lip fillers.
See the post, and the comment conversation, below!
She said: 'The one thing I was insecure about, she has. It's just an insecurity of mine and it's what I wanted to do.
On a May 2015 episode of "Keeping up with the Kardashians", Jenner had confessed using fillers to enlarge her lips.
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"This guy I kissed was like, 'Your lips are really small but you're a really good kisser".
Fans praised Travis Scott's girlfriend, with some claiming she looks "much better" with natural lips.
This is why it didn't take fans long to notice something different about a recent picture she posted. This was supposedly a clue that Jenner was pregnant, which turned out to be the case.
Ourian said he would never knowingly give a pregnant woman lip fillers. "You look younger and so much more lovely this way".
Speaking about her biggest beauty blunder alongside her older half-sister Kim Kardashian, Kylie said: "Well, I definitely made my lips a little too big at one point".
Another stated: "You look awesome, fresh, young and handsome with your natural self". I got excited and felt like I needed to do a lot.