The parents of Kate Middleton, Michael and Carole (L), make a statement on the engagement of their daughter to Prince William, outside their home near the Berkshire village of Bucklebury in this November 16, 2010 file photo.Michael and Carole are rumoured to be among the 1,900 guests invited to attend the wedding of Britain's Prince William and Kate Middleton on April 29, 2011, according to local media.
 

Japanese Crown Prince Naruhito (R) and his wife Crown Princess Masako wave at Tokyo's Haneda airport, in this May 21, 2007 file picture. Crown Prince Naruhito and Crown Princess Masako are rumoured to be among the 1,900 guests invited to attend the wedding of Britain's Prince William and Kate Middleton on April 29, 2011, according to local media.
 

Britain's Laura Parker Bowles arrives for her marriage to Harry Lopes at St Cyriac's Church in Lacock, Wiltshire, in this May 6, 2006 file picture. Laura Parker Bowles, the daughter of Britain's Camilla Duchess of Cornwall, is rumoured to be among the 1,900 guests invited to attend the wedding of Britain's Prince William and Kate Middleton on April 29, 2011,according to local media.