A perfect hybrid between comfy and fashion, some shirts aren't worth taking off. Though I am generally opposed to consecutive days wear, I once lasted a week in my green and blue version of this top.
If you haven't already, you will surely go mad for plaid with this Plaid School Boy Shirt by Elizabeth and James. With a just right loose fit and slightly ruched sleeves, you'll want it in every colour it comes in. The top has a three-button gusset at the back for adjustment options, and retails for $245 at ShopBop.
Straight from the Hills, Lauren Conrad has an eye for the right top when she see it.