Loosing more then just weight

Luna is a girl that lives on the beautiful island called Curacao,
She is the one friend that is nice to everyone, and always is happy and spontaneous,
everyone likes to be around her, and she is very popular at her school, there is one problem, she never get asked for dates, because she is the shadow of her drop dead gorgeous friend Milena, Milena is popular, has very long curly hair, and a very nice athletic body,
While Luna on the other hand is a little overweight.

Luna is tired of being the nice girl, and she decided that after graduation she is going to lose weight,
Losing weight she started to get the attention she wanted, and turned her into someone beautiful, but who is arrogant and selfish.

Which is more important, the physical beauty, or the one that lies within?