Kendall Jenner tells sister Kylie: Your lips are too big While most of the Kardashian clan seem to be fans of going under the knife, Kendall Jenner doesn’t seem to be too keen on little sister Kylie’s OTT lip-fillers telling the 17 year-old that they’re “too big”.Despite being a supermodel, Kendall has always been the most down-to-earth of the Kardash/Jenners when it comes to her looks and has admitted in the past that she’s a bit of a ‘tomboy’.In a sneak peek of an upcoming Keeping Up With The Kardashians, Kylie and sister Kim discuss the teenager’s lip fillers, which she finally admitted in a previous episode were fake. Kendall then tells her sisters that no-one needs surgery because they’re all beautiful – thank god one of the them has her head screwed on.Referring to Kylie’s,17, over inflated lips, Kim had nothing but praise despite the fact she’s plumping at a time when her body is still developing.Kendall Jenner with sister Kylie on day one of Coachella (WENN)“Your lips look amazing,” she tells Kylie, but does warn her about lying over the fillers: “I don’t want you to get carried away, lips aren’t permanent, but if they (media) ask about your lips, own up to it.”Kylie adds that Kendall told her they’re “too big,” to which the sassy model tells both of her sisters: “I don’t know why you guys are freaking out or talking about this. No one needs anything. Everybody looks beautiful.”“No, I think if something makes you insecure and you’ve been feeling that way forever… Who doesn’t want to look amazing? Do what makes you happy,” Kim replies, which is pretty dangerous advice to two impressionable teenagers you’d think. “We’ve all had our own insecurities and it’s nothing to be ashamed of. It’s just handling it the right way.”Kylie’s lips have been a source of contention for months, with people critical of the teen for having fillers at the tender age of 17 and also, not actually owning up to it and insisting it is all lipstick. She also got the blame for the #KylieJennerChallenge where people tried to imitate the look by sucking on a glass or tube to bruise their lips, with horrendous results.While Kim seems ok with the teen getting work done, she does warn Kylie, who has always denied her massive pout was anything more than lip-liner: “If someone asks you about your lips, just be honest. Just tell them, it’s not that big of a deal.“Just make sure you keep everything subtle and don’t go over aboard.”And what’s Kim’s body insecurity?“Just with my weight,” she revealed, “I cannot leave the house without Spanx.”Loving Kendall here, we wish Kim and Kylie would realise their insecurities are what make them beautiful!