What is beautiful?

Assalamualaikum,

One of my friend stated that we, as women has to be beautiful. I asked her, beautiful in what way? She said that fair skin, wearing the very best quality make up and nice trimmed eye brows are one of the beautiful aspect. Hm, I'm speechless because in my point of view, beautiful is abstract. We can have whatever image that we want but the most important element is our heart. 

Then, she said that women must be thin, in shape, in order to make sure that their love one especially their boyfriend or husband don't run away. So, they must be so beautiful whether in or out of the house. On the other hand, my belief rebut her opinion. Truly, according to Islam, wives should wear beautiful and be beautiful just for their husband and not for the outsiders. Yes, everyone has their own opinion. Something to ponder, is it great that someone wants to be your friend because of you are beautiful and popular but the truth is behind you, they are badmouthing you? Please give your opinion....