Don't forget, celebrities' bods are often photoshopped. I think 9 out of 10 women are dissatisfied with their bodies, so you're not alone. I'm certainly not. It scares me sometimes that I can look at supposedly scarily underweight people and not be disgusted because there are some "desirable" celebrities who look similar. I mean, someone posted to link to two photos of anorexic girls, and I genuinely didn't think the one on the left was that bad.
Maybe you need to find someone who feels similar to you, and look at photos of them that they hate and think they look awful in - you'll probably wonder what they're talking about and realise that most people think they're less attractive than they are.