I don't go anywhere without my best sunglasses during the summer months. Frankly, I carry them most days when it's cold, too.
Not to be all Anna Wintour about it, but aside from the obvious protection from the sun they offer, I love to wear them in photographs, use them to push my hair back from my face, and I feel that little bit more confident when I'm not wearing make-up but I do have a pair of sunglasses on hand. They even look great when you're not wearing them, tucked down a t-shirt or shirt.
