The star claims that the lip gloss is what's making her lips look so plump. As if... There's nothing wrong with getting a little plastic surgery, but if it's overly obvious then just be up front about it. Kendall or Kylie sister aren't fooling anybody.
Dr. Anthony Youn had this to say, "Kendall’s lips look like they’ve enlarged substantially. I suspect that her lips were either stung by a bee or injected with a filler, like Juvederm. The giveaway to me is that her upper lip is larger than her lower lip."