The secret is finally out! The youngest 'Kardashian' sister Kylie Jenner opens up to having lip injections to plump her pout in the latest episode of 'Keeping Up With The Kardashians' - with a little push from big sister Khloe Kardashian.

Kylie Jenner at Nip+Fab photocallKylie Jenner opens up about lip surgery

There's nothing wrong with getting a little work here and there to improve your looks; most celebrities admit to getting their teeth whitened, Botox, hair transplants and/or laser treatment at some point, as well as undergoing actual surgical procedures like breast or butt implants. Nobody minds when the truth is revealed, but it gets a little insulting when magically transformed superstars insist it's all natural.

The internet has refused to keep silent over its suspicions of Kylie Jenner's fuller lips after the 17-year-old socialite has revealed a significant change from her previously modest mouth, and it seems - despite fierce denial - that it was right all along. 'Kylie decided to plump her lips and I don't think there's anything wrong with that', Khloe Kardashian revealed in an episode of 'Keeping Up With The Kardashians'. 'I think if you've done something, though, it is right to cop up to it. If you avoid a question, you're going to look like a liar.'

And while Kylie insisted that was 'not ever going to deny or confirm anything', she did eventually open up, firmly stating that her reason for secrecy was fear of judgement by the media. Which is fair enough. 'I have temporary lip fillers, it's just an insecurity of mine and it's what I wanted to do', she confesses. 'I want to admit to the lips, but people are so quick to judge me on everything, so I might have tiptoed around the truth, but I didn't lie.'

More: Girls try to copy Kylie Jenner lips with disturbing techniques

Kylie's 'tiptoeing around the truth' usually included elaborate make-up tips, with her own make-up artist Rob Scheppy even insisting to the Daily Mail, 'Kylie's lips are created using expertly applied lip liner and a little lip balm.' She also selected her vocabulary very carefully in a Grazia interview, stating: 'I haven't had plastic surgery. I've never been under the knife.' Which is technically true.

More: Kylie Jenner praises brave father Bruce Jenner

As much as we're binning our lip liners in frustration, I guess we can forgive the reality star - who was naturally beautiful to begin with.