'Kylie Jenner Lip Challenge' Gone Wrong: Teens Share Before And After Photos

Kylie Jenner is known for her pillow lips, natural or not. The "Keeping Up With the Kardashians" star denies she has had plastic surgery on her famous pout, which has started an alarming new trend among young Twitter users. The "Kylie Jenner Challenge" encourages people to put a glass or plastic cup on their lips and then suck for about five minutes. The pressure brings blood rushing to their lips and inflates them so they look just like the 17-year-old Jenner's.