Everyone is beautiful, first and foremost you are beauty in Gods eyes. Accept yourself before you look for beauty in others. I think as a general rule most people associate beauty with looks but I believe it can be both and sometimes the personality can even outshine that
It could be how you conduct yourself and how you dress. I think a girl who doesn't go overboard with the dressing up and makeup is beautiful. Even more beautiful if she's really down to earth and not so stuck up.