The world’s smallest Christmas card has been created by British scientists – 200 million times smaller than a STAMP.<br /><br />The tiny card, which is 15 microns by 20 microns, even includes an intricate inscription of a snowman and seasonal messages - despite being too small to see with the naked eye.<br /><br />It was created by scientists at the National Physical Laboratory in Teddington, south west London, who say it is ten times smaller than the previous record holder.