Last night on Keeping Up With the KardashiansKim posed nude on a beach for a very NSFW photoshoot. But while that's all everyone's been talking about, there was actually more to the episode: Kylie Jenner addressed her fake lips, and was very candid about it all. 

"I have temporary lip fillers," said Kylie. "It's just an insecurity I have." 

Many have noticed the change in Kylie's appearance. The reality star herself had discussed it in the past, denying rumors of plastic surgery and instead saying her physical appearance has change because she's gotten older. 

While it's true that Kylie hasn't gone under the knife, Khloe confirmed in the same episode, which was previewed, last week that her sister has been using temporary lip fillers.

It was a hot topic in last night's episode, with Kim, Kendall, and Khloe all addressing their sister's decision to enhance her lips. 

"The lips are just... she got a little crazy," said Kendall, who added that she accepts Kylie's decision if "it makes her feel better about herself" but that she doesn't "want her to take it too far because she's a beautiful girl." Khloe, on the other hand, seemed to be all for it, saying "it changed [Kylie's] life." 

Prior to the airing of the episode, Kim spoke exclusively to E! News during one of her book signings for Selfish and further confirmed that Kylie has enhanced her lips. She said that at first, Kylie only used makeup to give the appearance of a plump lip pout. But after using that technique for a while, Kylie realized it was too long of a process and opted for temporary lip fillers instead. 

Kim was supportive of her sister, though, saying: "I'm proud of her that she just was honest about it. It wasn't like she lied about it for so long, it was just steps to get to where they are."

Watch the clip above.