Even Kylie Jenner thinks the #KylieJennerChallenge is a bad idea

Over the weekend, teens started sucking on shot glasses to plump their lips, then posting photos of the disastrous results on social media with the hashtag #KylieJennerChallenge. The technique could result in swelling, bruising and even "permanent disfigurement with repeated attempts," dermatologist Dendy Engelman told Seventeen.com.

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The "Keeping Up With the Kardashians" star took to Twitter on Tuesday to tell girls to be themselves.

"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," she wrote.