Window-shopping: summer beach essentials

Robert Marc shield sunglasses

Just as the Manolo Blahnik brand was practically a character on "Sex and the City," so is Robert Marc to "Gossip Girl." Every underage Manhattanite worth her imaginary fortune has been captured on camera wearing the eye outfitter's colorful creations—including these limited-edition shield sunglasses in "iced tea with mango." 

Available at Roberts Optical ($495).