Even when you are your most casual and laid-back this summer, you can still inject a little glamour to your look with these crystal-studded sunglasses. The subtle cat-eye silhouette evokes the retro allure of Marilyn Monroe and Elizabeth Taylor; the crystals add some jet-set sparkle, while the slightly oversized frames point to L.A.'s chic Hollywood set. So you can pack a stylish punch — and still be incognito.