In this photo taken Wednesday Feb. 16, 2011 at Buckingham Palace in London, a member of the Lord Chamberlain's Office, no name given, places invitations into envelopes, to the wedding of Prince William and Kate Middleton, before posting them to the lucky guests who will be present at the April 29, 2011 royal wedding to be held in Westminster Abbey. Almost 2,000 guests have been invited to the wedding of Prince William and Kate Middleton. Their names have not been released but the Westminster Abbey congregation is expected to feature celebrities, leading politicians, heads of state and royalty from across the world. [Xinhua]