While she will always support a splurge-worthy goodie, my grandmother will rarely be seen in designer sunglasses (and it must be known that she counts this particular accessory among her year-round wardrobe essentials). Sunglasses, she insists, are just too easily lost or broken and not worth the investment. While this piece of advice stems from the memory of leaving a pair of day-old designer frames in a taxi cab decades ago, it's one she vehemently insists upon and (sadly) a voice I have in my mind every time I lay my eyes on a pair of retro-shaped Miu Mius.