Kylie Jenner is ''not against'' plastic surgery.

The 'Keeping Up With The Kardashians' star would never say never to going under the knife but admits the only artificial enhancement she has had is lip fillers.

Writing on her website, she shared: ''I'm not against plastic surgery. Full disclosure: I've only been under once before, when I went to the dentist and I didn't react well; it really scared me. I threw up and I was so nauseous the next day.

''But as of now, I only have lip fillers. Like I've said before, it has always been a huge insecurity of mine and I wanted to make a change.''

The 17-year-old beauty also denied rumours she has had her breasts surgically enhanced, insisting she has just ''filled out'' as she's got older.

She said: ''But no, people - I haven't gotten breast implants! Everyone is obsessed with that. Truth is, as I've gotten older, I've gained 15 pounds and my body has changed. I've definitely filled out ...

''I swear there are things you can do to work on problem areas without having to think about plastic surgery. Contouring has changed my life! ...

''If, down the line, I get to a point where I'm really uncomfortable with something on my body, I'm not against changing it.''