On the days we don't feel like spending the time and energy picking out an outfit and really just want someone to tell us what to wear (please, we beg you!), nothing beats a well-made, eternally-elegant shirt to help us power through. As the basis for any wardrobe, the power of the crisp button-up is that it is forever chic and incredibly versatile. It can be dressed up with a tux or killer suit , or tuck into your favorite mom jeans and worn with sneakers. Either way, it's the quickest way to look and feel instantly smart.