everyone is there own person, don't feel like you have to do something just because someone else is doing it, and don't forget, no matter how tall, short, skinny, 'fat' or the length of your hair, none of that defines you as a person, Sweetie, it's your personality that matters... You Are All Beautiful!
seriously,even if you don't think your the most beautiful person, which you are, personality is also plays a big part in your life, and i'm sure your personality is beautiful too, no matter what "they" say so chin up gorgeous, you'll be forever beautiful. <3