What do all incredibly cool people have in common? They wear Sunglasses. Whether you're Miles Davis or Audrey Hepburn, James Dean or Bob Dylan, your sunglasses are never far away.

Who invented sunglasses and who made them so cool? Was there a moment when sunglasses went from being just an instrument for protecting your eyes to becoming an iconic symbol of high fashion?

Vanessa Brown, author of Cool Shades: The History and Meaning of Sunglasses knows everything about sunglasses and she joins Dallas to answer all your burning questions about sunglasses.

Edited by Tom Delargy, Produced by Alex Carlon, Senior Producer is Charlotte Long

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