The seemingly impossible riddle of Kylie Jenner's perfect lips has been solved - solved! And with four little words: she got lip fillers.

The wonder that is Kyles' pout of late is a modern marvel, mainly because she has always denied that her most distinctive feature is surgically enhanced.

Last April, she wrote on Twitter: 'These plastic surgery rumors hurt my feelings to be honest and are kinda insulting. Just in case anyone forgot... I'm 16'.

So now, she's 17. And, in a clip released by E! from the upcoming serious of Keeping Up With The Kardashians today, she's come clean.

'I have had temporary lip fillers,' she admits. 'It's just something that I wanted to do.'

Big sister Khloe encouraged her to 'cop to it', telling her: 'If you avoid the question, you're going to look like a liar.'

Looking like a liar is the least of it, say we. Sure, the Kardashian klan are partial to a little cosmetic enhancement - but at Kylie's age? Really?