We're never satisfied with how we look or what we have. There will be people who look at you and wish they had your features or body shape or whatever. And we do the same when we look at others.
Happens to guys too, some feel they're always too skinny or not muscular enough, and have a distorted view of themselves, despite being perfectly fine (I've been guilty of this).
You just have to remind yourself that your body is unique and suits you the way it is, if you don't like a certain aspect, work on it in a healthy manner and don't be too harsh on yourself, you are your own worst critic.