LONDON, UNITED KINGDOM - APRIL 10: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Princess Michael of Kent and Prince Michael of Kent attend Ceiliuradh (an Irish cultural concert of music, spoken word and dance) at the Royal Albert Hall during the State Visit by Irish President Michael D Higgins on April 10, 2014 in London, England. Ireland's Michael D. Higgins is making the first state visit by a president of the republic since it gained independence from neighbouring Britain. The visit comes three years after Queen Elizabeth II made a groundbreaking trip to the republic, which helped to heal deep-rooted unease and put British-Irish relations on a new footing. (Photo by Max Mumby/Indigo/Getty Images)