The Duke and Duchess of Cambridge today proved that they were anything but work shy as they attended official engagements together just hours - and a sea - apart. 

After visiting the US Embassy in London's Grosvenor Square to meet Ambassador Matthew Barzun and pay their respects to the victims of the slaughter in Florida by signing a book of condolence, the duo jetted to County Down to join First Minister Arlene and a host of dignitaries at Hillsborough Castle. 

Kate and William were bathed in glorious sunshine at the annual garden party which is always attended by a senior member of the Royal Family. And Kate picked an old favourite from her wardrobe for the occasion - a ten-year-old cream brocade coat that she first wore to Laura Parker Bowles' wedding to Harry Lopes in 2006.