How to get a child to love their hair, their appearance and themself?

First of all, I think this a little more serious than what you may think. My older brother was like this when he was 14 and it turns out he has something called BDD. He finds that there is something wrong with his nose, when really, there isnt. He hated to go out in public (just like her) And would spend hours on end staring at himself in the mirror. Finally my parents said enough and took him to see someone about this. He is currently on medication and just graduated from college. One thing that my parents did to help him with his situation was to take down the mirrors that they could and paint the others with removable paint. If he tried to sc away the paint, my mom would cover it again. This seemed to help alot with the therapist and all and he is doing much better and his whole personality has changed for the better. As i said earlier, this is more severe that her parents may think. I would recommend taking her to her doctor because it can only get worse with time if you don't. Also you don't want to shower her and treat her better than her twin. Dont play favorites because that wont do anything. Convince her that shes beautiful in her own way and DONT try to make her change herself! There is something special about everyone. Good luck and i wish you all the best :)