I also think you're pretty. I think there's way too much emphasis on looks. The images that come from the entertainment and beauty/modeling industry are very false and misleading. They spend hours on hair and makeup - then the pic moves to photo editing where they make the person look perfect. These people don't even look like this is real life. Ever look at famous people without makeup?
I agree with Yoda - a good personality is even more important than looks. Emphasize your best assets and be content with yourself. Don't compare or worry about other people's looks. Take a look at this Dove website:
http://www.dove.ca/en/default.aspx
Click on 'Campaign For Real Beauty'