Prince William and Kate Middleton celebrate 40th birthday
Stephen Lock/Keystone Press Agency/globallookpress
The celebration will take place in one of the palaces.
Queen Elizabeth hosted a "joint 40th birthday party" for Prince William and Kate Middleton. She allowed the event to be held either at her home in Windsor Castle or at the Sandringham Estate.
Probably, the Queen believes that the Cambridges should "celebrate their significant birthdays in style."
Apparently senior royals and maybe the Queen will attend the event, The Mirror reports.
Read also: Prince George, Princess Charlotte and Prince Louis make their carriage debut.