Meh. I don't want to look 'natural', I want to look GOOD!
What's the weird obsession with 'natural'? To me, something either looks good or it doesn't. I don't give a shiny, if it's 'natural'. Huge duck pout doesn't look good (to me), but nicely done (not overdone) lips can look absolutely great, as many women on this thread shown. Whether you can tell or not, who cares.
I don't have lip fillers, 'done' eyebrows, fake lashes. But it's not because of my 'superior character', it's because I have dark full eyebrows, long black lashes and full lips already. If I didn't - I'd do something about it for sure. My hair is cut and colored, I have tattoos, teeth straightened and whitened, breast lift post-baby. None of this is 'natural'. So should I walk with greying hair, saggy tits and yellow crooked teeth if I can change it? Why would I?
My mum has botox and a little of lip filler. Yes, I can tell, but she looks bloody great, much better than without it. I know mumsnet is full of women age 70, who don't look a day over 25, not a tiniest line on their faces, and people regularly assume their daughter is their mother. Yep, totes believable. In reality I've never ever seen anyone remotely close to that, even the most beautiful multimillionaire celebrities doesn't look decades younger than they are 99% of the time.
What I'm saying is, if you want it - go for it. Your body - your business.