To don 80s sunglasses is to touch a magical era of chest hair, mustaches, and The Ultimate (chest-staches). For all the glamour and none of the coin, try Giant Vintage.
Culling shades from warehouses brimming with unmoved stock, GV peddles vintage, occasionally ltd 80s kitsch that won't put a dent in your wallet, but will put neon green all over your face. With hundreds of styles uploaded to the site each month, current offerings include new-wave tinged standards like aviators and spectacles, as well as more exotic fare like mono-lenses with plastic visors, and a piece with a single horizontal eye slit that'll make you look like Geordi La Forge -- only you'll be able to see everyone mocking you. Lens wizardry can be had with an array of SunSensors (go from clearish to dark when you trek outside), while printed lenses that feature designs like a star surrounded by dots can bring a little Bootsy back into your life (Astronomical!).
While most styles are 80s, GV also carries vintage 70s/90s shades, and even clearly delineated modern throwbacks like a lensless plastic number with see-through slats -- so strikingly odd, they'll pull off the impossible and distract onlookers from your luxuriant lip-log.