You are beautiful.
You don’t need anyone to tell you that. You are beautiful in more than one way. You are beautiful in ways that are all your own. Comparing your beauty to that of other girls isn’t going to do anything but make you miserable. Comparison is toxic, and although it’s human to do it, it doesn’t make it any less harmful. Everyone is different, everyone is worthy of love and good things, and everyone has something different to offer to the world. Don’t compare what you have to what others have, because it’s not any more or less than what anyone else has, it’s just different. And that’s how it should be.
Outer beauty is just one small aspect of who you are, too, but that’s not the issue here. You know this already. And it’s okay to love yourself and your beauty. It’s okay to be proud of how you look and to revel in it. You don’t owe it to anyone to be modest, and there is a difference between being vain and being confident. Confidence is a good thing and it comes from loving yourself and who you are, first and foremost. So don’t worry about that. You aren’t vain for saying you’re beautiful; you’re honest.
So, again, you are beautiful and you don’t need anyone to tell you that. Tell yourself, everyday, and know that you’re beautiful in many ways that are all your own.