Los Angeles - Kylie Jenner has urged fans not to copy her look.
The 17-year-old reality TV star took to her Twitter account to encourage her followers not to try and emulate her famous pout after the #KylieJennerChallenge started trending on the site, prompting users to go to extreme lengths to mimic her full lips.
After photographs of fans with severely swollen lips began to flood the site, Kylie shared her feelings about the trend...
It is said the brunette beauty has been left "mortified" by the challenge, which saw some Twitter users place their mouths inside a bottle and then suck out the air to increase the size of their lips through bruising and swelling.
A source told HollywoodLife.com: "Kylie is mortified that some people are trying to plump their lips to look like her. That wasn't her intention. She's not trying to be the poster child for full lips and she's absolutely saddened by this entire ordeal.
"She wishes she could meet every single person who's done this crazy thing face-to-face, and tell them they're beautiful just the way they are. Kylie's not trying to be a trendsetter by any means with her lips.
"She had no idea some people would go to these very dangerous lengths in an attempt to make their lips fuller. She wants it to stop and believes all beauty comes from within."
Kylie's appearance has recently come under much scrutiny with her increasingly fuller lips prompting speculation she has undergone cosmetic surgery, a claim which the Keeping Up With The Kardashians star has denied.
She previously said: "I'm like, 'Stop talking about my lips.' I haven't had plastic surgery. I've never been under the knife.
"People flashback to pictures of me when I was 12 and say, 'Kylie's so different' but how can I look the same from 12 to 18?"
In a recent clip of KUWTK Kylie, Scott Disick and Kendall Jenner discuss the process of how she gets her lips so pouty and it involes nothing else but a couple of pinches and really good make-up.
Meanwhile, Blac Chyna - the ex of Kylie's rumoured boyfriend Tyga - got in on the #KylieJennerChallenge with fake wax lips...
Talk about throwing shade!