Sunglasses, the ultimate practical accessory, have been a hallmark of style long before we had any reason to fear UV rays. While some of the most iconic trends, like aviators and wayfarers, may come from utilitarian military use, everyone who’s been anyone over the last 60 years understands that the distance provided by shades over your eyes instantly ups your cool factor. Fashion and pop culture constantly form a feedback loop, and the history of popular sunglasses shows little exception – the biggest trends in eyewear can often be traced back to the movies and music that defined their time. Here are some of the most iconic sunglasses through the years. Early ’60s – Dramatic cat-eye sunglasses gave way to more subtle frames. While cat-eye frames may be more closely associated with the extravagantly feminine, early Cold War look of the 1950s, more subdued versions of these big, raised-corner frames were popular in the early 60s as well, a la the iconic style of Audrey Hepburn in “Breakfast at Tiffany’s.” Late ’60s – Oversized and dark shades were the height of fashion. Mod had its moment in the later ’60s, popularising big, colourful frames in geometric shapes, like those famously…