Low cut tops and short shorts scream: "This is all I have to offer. Please like me for my breasts and cute buns." We women insult ourselves by dressing in revealing ways.
A fellow adoptive mom, Dianna, wrote this terrific article defining what is and is not modest. I hope it helps you as it has me.
And I want women to be modest in their appearance. They should wear decent and appropriate clothing and not draw attention to themselves. For women who claim to be devoted to God should make themselves attractive by the good things they do.1 Tim. 2:9-10