Check out a sneak peek of this Sunday's episode of Keeping Up With the Kardashians, where Kylie Jenner confirms that she doesn't suck on bottles to enhance her lips.

Fans all over social media participated in a "Kylie Jenner Lip Challenge," where they would suck into a shot glass to create a temporary plumped lip. The 17-year-old addressed the challenge on Twitter, saying, "I'm not here to try & encourage people/young girls to look like me or to think this is the way they should look. I want to encourage people/young girls like me to be YOURSELF & not be afraid to experiment w your look."

In this sneak peak of this Sunday's episode of Keeping Up With the Kardashians, on TooFab.comKylie Jenner finally admitted that she has temporary lip fillers.  She said it was an insecurity of hers and it was her choice to get them done.

In the clip, Khloe Kardashian said that there's nothing wrong with getting plastic surgery, but you need to own up to it or you'll look like a liar.

Meanwhile, Kim K's bestie Jonathan Cheban dissed Tyga's ex Blac Chyna and Amber Rose for "bullying" Kylie, calling them "ghetto" and "street." He told RadarOnline, "Kylie's young, they're not. They are bullies. Both of them are kind of street. They take it to another level and they're always looking for a fight. I want to show them what it is like. I'm not taking sides. They're too ghetto, too street. They're bullies...I want to bully them back, They're really aggressive. They should at least wait until Kylie is 18."  He added that if any videos of Chyna or Amber's stripping days ever popped up on the Internet, he would gladly post them, saying, “I’ll put crazy videos of them up. People want to see them. It doesn’t get any classier with these two.”

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