Modesty of the Heart
Whose adorning let it not be that outward adorning of plaiting of the hair, and of wearing of gold, or of putting on of apparel; But let it be the hidden man of the heart, in that which is not corruptible, even the ornament of a meek and quiet spirit, which is in the sight of God of great price. 1 Peter 3:3-4
These verses talk about where a woman's true beauty lies. True beauty is not about what a woman does or doesn't wear, it is about what is in her heart and spirit.
I don't want this to come off as though I don't think dressing modestly is important, I do! I think we as women need to take a good look at our closets and make sure that the things that we are wearing are honoring to Christ and to our husbands (or future husbands). This probably means taking a look at how tight, low cut, and how short the things that we wear are, but most of all it means taking a look at our hearts and why we wear what we wear. I do not think that modesty means that we have to look frumpy or that we can't wear clothing that is trendy and in style. It just means that we need to examine what we are wearing and why we are wearing it. I think we should dress in a way that is polished and feminine. I think that we should dress in a way that represents Christ well. I think that our clothing should be an outpouring of what is in our hearts, and in our hearts should be a desire to please the Lord above all else. Above all Christ should be glorified by what we wear, not ourselves for our attractiveness, or for our "modesty".