Kris Jenner wouldn't allow Kylie Jenner to get reconstructive surgery when she was a teenager.

Kylie Jenner

Kylie Jenner

The 19-year-old 'Keeping Up With the Kardashians' star has quashed speculation she has gone under the knife to define her cheek and jaw line, a rumour which she has been plagued with since she was 16 years old, insisting her 60-year-old momager would never have consented to the cosmetic procedure if she had of asked for permission.

Speaking on her website thekyliejenner.com, she said: "No I didn't [have cheek surgery].People started saying that when I was 16.

"You really think Kris Jenner would let a 16 year old me have cheek and jaw reconstructive surgery? No. "

And the reality star has revealed she "always" loved her jaw and "never" felt any need to change it, but her lip fillers are the reason her facial feature looks different.

She explained: "I always used to love my jaw. I was never self-conscious about my jaw, but before I got my lips done, my lips were very tiny and more like sunken into my chin.

"Someone made a meme of me on the internet of me that I was the Crimson Chin. And me and [my friend] Stas have been laughing about it for about six years. But now that I have big-ass lips, it looks normal."

And the teen entrepreneur has contemplated about having breast enlargement, but has swiftly discarded the idea because she likes the "cute little size" of her assets.

She explained: "I've thought about it [boob job] and I think 'Why ruin it?' I have really good boobs naturally. They're like a cute little size. I'm not against it but right now, it's a no from me.

"No ass implants, no ass implants."

Meanwhile, Kylie - who is the youngest of the Kardashian/Jenner gang - has revealed she "doesn't try to compete" with her older sibling Kim Kardashian West.

Speaking about her 36-year-old sister, she said: "I don't try to compete with Kim to be the hottest sister.

"I mean I think all my sisters are hot, but Kim's got the crown, Kim's so cute and sexy. I never compete with my sisters."