How can I stop feeling like the fat kid?

Realize this: Most people have no idea what they even find attractive. They're just waiting for someone to tell them. Seriously, look at how the media will tell them some random celeb is attractive and they will fawn....or they will tell them a certain style is "in" and they will buy it and think it looks amazing. So stop caring what they think and realize that it's all about you. Figure out who you are, what you like and be yourself. If you like yourself and you act confident, people will respect you.