Prins William og Catherine, hertuginne av Cambridge

Britain's Prince William looks on as Kate, Duchess of Cambridge dances with Paddington Bear at Paddington Station in London, Monda... Credit: AP

(FILES) This file photo taken on July 21, 2017 shows Britain's Prince William, Duke of Cambridge and his wife Kate, the Duchess of... Credit: AFP

Britain's Prince William (L), Duke of Cambridge, and his wife Kate, the Duchess of Cambridge, form pastry to prezels during their ... Credit: Reuters

TOPSHOT - Britain's Prince William, Duke of Cambridge and his wife Kate, the Duchess of Cambridge visits the Bellevue Palace garde... Credit: AFP

Britain's Prince William, left, Duke of Cambridge, Kate, the Duchess of Cambridge and their children Prince George, second left, a... Credit: AP

Children welcome Britain's Kate, the Duchess of Cambridge, during her visit with Britain's Prince William, in front of the presid... Credit: AP

Britain's Kate, Duchess of Cambridge, left, smiles as she travels with Prince William, right and Prince Edward, in a open carriage... Credit: AP

Britain's Prince William, Kate, Duchess of Cambridge, and Prince Harry take part in a relay race, during a training event to promo... Credit: Reuters

Britain's Prince William and his wife Kate, the Duke and Duchess of Cambridge, visit the Cridge Centre for the family to meet peop... Credit: AP

A pigeon flies ahead of Britain's Queen Elizabeth and Prince Philip, and Princes William, Harry and Kate Duchess of Cambridge behi... Credit: Reuters

Britain's Prince William, right, his son Prince George, front, and Kate, Duchess of Cambridge holding Princess Charlotte, centre, ... Credit: AP

Britain's Prince William and his wife Catherine, Duchess of Cambridge, appear with their baby daughter outside the Lindo Wing of S... Credit: Reuters

Britain's Prince William and his son Prince George wave as they return to St. Mary's Hospital's exclusive Lindo Wing, London, Satu... Credit: AP

Catherine (R), Duchess of Cambridge, and her husband, Britain's Prince William, laugh as they watch a young players' rugby tournam... Credit: Reuters

Britain's Catherine, Duchess of Cambridge watches her husband Prince William sit in the cockpit of a Sopwith Pup at the Omaka Avia... Credit: Reuters

TOPSHOTS Britain's Prince William (R) and his wife Catherine, carrying baby Prince George, arrive at the international airport in... Credit: AFP

Britain's Prince William and his wife Catherine, Duchess of Cambridge appear with their baby son outside the Lindo Wing of St Mary... Credit: Reuters

Britain's Prince William and his wife Kate, the Duke and Duchess of Cambridge, smile as they watch a shark ceremony as they arrive... Credit: AP

Prince William and his wife Kate, the Duke and Duchess of Cambridge take their shoes off before entering a mosque in Kuala Lumpur,... Credit: AP

Prince William and Kate, the Duke and Duchess of Cambridge, arrive via stage coach for a reception at the BMO Centre in Calgary, C... Credit: AP

Britain's Prince William and his wife Catherine, the Duchess of Cambridge, react after the prince took a shot with a hockey stick ... Credit: Reuters

Britain's Prince William and his bride Catherine, Duchess of Cambridge, pose for an official photograph, with their bridesmaids an... Credit: Reuters

Britain's Prince William and his wife Catherine, Duchess of Cambridge, watch the fly past as they stand on the balcony at Buckingh... Credit: Reuters

Britain's Prince William and his wife Catherine, Duchess of Cambridge, kiss as they stand next to bridesmaid Grace van Cutsem (L) ... Credit: Reuters

Britain's Prince William and his wife Kate, Duchess of Cambridge stand outside of Westminster Abbey after their Royal Wedding in L... Credit: AP

Britain's Prince William and Kate Middleton exchange rings in front of the Archbishop of Canterbury at Westminster Abbey, London, ... Credit: AP

Britain's Prince William and his fiancee Kate Middleton watch a demonstration by students at Darwen Aldridge Community Academy in ... Credit: AP

TOPSHOTS Prince William (L) and his fiancee Kate Middleton smile during a visit to the University of St Andrews in Scotland on Fe... Credit: AFP

The wind blows as Britain's Prince William (UNSEEN) and his fiancee Kate Middleton, attend a Naming Ceremony and Service of Dedica... Credit: Reuters

Britain's Prince William and his fiancee Kate Middleton pose for the media at St. James's Palace in London, Tuesday Nov. 16, 2010,... Credit: AP

Kate Middleton arrives at the Royal Military Academy, Sandhurst, where graduates, including her friend Britain's Prince William, p... Credit: AP