I have had belotero in my nasio labal folds for the last year, I have it done every 6 months and it works wonderfully. So, I have been thinking of lip fillers for a while. I mentioned this to the lady who does my fillers and she suggested trying a small amount with the left overs from my facial fillers to see if I like it, can tolerate the pain. She put about 0.5 -0.6 in both lips and even though I have never had big lips, they look much more defined but natural, they haven't changed shape as she only filled the middle, not lip edge and they dont look like these awful celebs.
I am so pleased with them and it wasnt painful like I thought it would be.
My advice, do your research, have it done in smaller stages to see what looks best and you decide what you want, not the person doing it.