Well, are you afraid of like men always thinking you're sexy? or always checking you out because you look very pretty? If so, they look at a girl no matter what, at least from my experience of working with "macho" men at my job, not even kidding, every 5 minutes they run out and drool over a girl that walks by, so I walk by and say, hey, stop checking out the girl and get to work, followed by the girl giving them a dirty look and them getting mad at me lol.
or are you just afraid of looking fake? like a barbie doll? Because I can understand that, I want to go with as little plastic surgery as possible, one for it being expensive, and the other because its not something you can reverse if you don't like the way it looks.