The Duchess of Cambridge, Catherine "Kate" Middleton, met London Marathon runners ahead of a big race on Sunday. She joined runner Alex Stanley to put a Heads Together headband onto a Kensington Palace post-box, which supported the Royal Mail wrapping 70 post-boxes to line the 2017 Virgin Money London Marathon route. The race took place at Kensington Palace on April 19, 2017, in London, England. [Photo/VCG]