The button down white shirt is everywhere, and to prove it here are some great, work appropriate stylings, from across the internet and blog-o-sphere.
This months work essential item is the white button down. Every woman, no matter your vocation, job position, or pay grade needs at least one of these in your closet. This item is so simple, but right now the options are endless, which means you probably need two styles. An important tip, one that I learned too late, when you do find that 'perfect' white button down, buy two, maybe three, because white shirts sadly do not last forever. I will never forget you my Zara white button down!
My current closet favorite is the from Uniqlo (available here, for £19, also available in the US). The weight of the cotton is perfect, it doesn't gap in the chest and the collar has buttons, which gives you options and I love options.