I'm not trying to be cheesy or anything, I'm just telling you the facts, God made you beautiful... In His image are you - Genesis 1:27 (put your mouse on the verse to read it).
Do not let anyone treat you like you're not worth the best because you are.
I know some people or someone out there might be feeling not so pretty/fly/beautiful, but you are... God sees you that way (Ecclesiastes 3:11).
That boys/girls are not tripping all over you doesn't mean you're not beautiful, everything that happens is permitted by God, he runs this life. If they do trip over you, thank God, it's Him that created you beautiful, if they don't, thank God, He still created you beautiful.
Find your identity in Christ and not in your physical appearance, your clothes, your car, etc.
When you find your identity in Christ (Galatians 2:20), you'll see yourself the way He does, as a beautiful and unbelievably gorgeous and good creature that He created you to be. Your past doesn't matter, God doesn't keep record of it, don't hurt yourself by doing so.
Here's a song I stumbled upon by Leah Smith... it's amazing.