Nowadays, with the growth of extreme fashion, new trends, and increased expectactions of how you look, girls are really under pressure. Most girls succesfully fit in and the not so succesful ones go through a lot of bullying, pressure and so much more negativity imposed on them. Looks are what really matter today, no matter how smart or nice you are. You are judged by the way you look and your sense of fashion. But not all the girls are aware of the "new" trends and how to dress and these sorts of stuff and they are subjected to bullying.
Being in your teen years is already difficult as it is without the added harrassments and social life. Several girls have gone to the extent of commiting suicide after they decide that they are unworthy, ugly, fat and so much more. This is why it is important that you nice people out there, should be on the lookout for such cruelties. You might be aware of all this, but just decide not to butt in or you dont have the "time". Just talking to a person generally can make a huge difference. We all want to be appreciated and loved by people and for those who have been bullied so much, just a word of appreciation and kindness would make a big difference. However, it isn't quite right to treat them as though they are some very unprivileged soul and you are doing them a favor by taking to them; a casual conversation to let them know that there are people they can go to would be nice.
I have had a few friends who have undergone such situations, so i can more than relate to all this. Even when you try to start over and go to a new school, your mindset is still in the place of a bullied person, and you think that everyone out there is waiting to make fun of you. You even feel afraid of making conversations in the thought that you will be ridiculed once again. So bullying is really a bad things, and the person who is bullying someone else, try to put yourself in that person's shoes and see how you would feel. Bullying can seriously affect a person and they can go to the extreme of commiting suicide.
So, in conclusion, be on the lookout for people suffering from harrassment and try to befriend them and make sure they understand that there are people for them to go to and that you are cared for.