Kim Kardashian's sister's lips are fake - Teen star admits to having lip fillers

 Kylie Jenner's changing lips    Photo: Courtesy

Anyone trying the Kylie Jenner challenge must be feeling pretty silly right now, as the 'secret' is out. Kylie got her lips plumped.

Questions have been rumbling on ever since Kylie's lips started looking bigger - and bigger - and now, the truth has been revealed in the latest episode of Keeping Up With The Kardashians.

Kylie is seen being asked for the first time about the constant buzz about her lips, and the 17-year-old gets freaked out as she doesn't know what to say.

Deer in headlights.

Big sister Khloe was on hand, when Kylie said: "No one’s ever asked about my lips, my heart literally dropped."

Talking at the launch of her extension line, she said: “They were like ‘So all this lip talk, you know, how do you feel about it?’. And I was like, ‘Uhh.'”

Khloe and her pal Malika were there to calm Kylie down, saying that people were there to 'trip them up'.

In a cut to Khloe, she tells the camera: “Kylie decided to plump her lips, and I don’t think there’s anything wrong with that.

The teen says: “I’m not ever gonna die or confirm anything. It’s too much.”

Remember when Kylie told Cosmopolitan in February: “You guys have watched me grow up since I was 9. My face is going to get different. Now, I know how to do my makeup, contour and everything. I’m not against surgery. I’d never say no, but I don’t desire it right now.”