We all know Kylie Jenner isn't shy when it comes to shaking her stuff for all to see.
But it looks like the 18-year-old reality star has taken things a little too far this time.
Kylie, who turned 18 in August, was captured on camera twerking against her 19-year-old sister Kendall in a very raunchy Snapchat video.
Model Kendall doesn't look too impressed as she turns around and shoots daggers in her sister's direction.
Kylie carries on undeterred, running her hands down her sister's sides and gyrating behind her back.
A partygoer can be heard behind the camera shouting: "Ew!"
Kylie is dressed in a very sexy white dress with a plunging neckline and a thigh high split.
Meanwhile, model-of-the-moment Kendall goes for a much more conservative look in a pair of black trousers and a black crop top.
Kylie Jenner is fast becoming one of the most talked-about reality stars on the planet and even her sister Kim Kardashian admitted that her little sister had stolen her reality queen crown.
The pair got together to make a video titled 'You’re In Bed With Kim and Kylie' on Thursday evening, where Kim fired off a string of questions for Kylie.
"How do you feel now that you have dethroned me?" pregnant Kim asks.
A shy-looking Kylie doesn’t to appear agree, but the reality star says she needs a break from being queen bee in any case.
"I love it, like, I love it,” the 34-year-old continues. "I need some time off. I mean honey, let's be real, you've got to put in a few more years before you actually dethrone me."
"But I give my baton to you. Who better to pass on knowledge to my baby sister, rather than a random non-family member."
Kim added: "You guys, this is amazing. I give Kylie all my tricks, I give her all my tips. I give her everything, and more. She is so, like, deserving."
