The look was not a far cry from an outfit his father wore as he disembarked a private plane at Aberdeen Airport for a family summer holiday in 1984 when the Duke of Cambridge was the same age as George now.
KATE AND WILLIAM'S POLAND ITINERARY
MONDAY 17TH JULY
The couple will be greeted by President Duda and the First Lady at the Presidential Palace in Warsaw.
Warsaw Rising Museum
The couple will visit the museum dedicated to the uprising against the occupying Germans in 1944, where they will meet veterans and lay a wreath.
Young Entrepreneur's Reception
William and Kate will join a tech market-place event, and pitching sessions from UK Polish entrepreneur at the Heart in the Warsaw Spire Building.
Garden Party, The Orangery, Łazienki Park
William will make a short speech at the event held in honour of his grandmother the Queen.
TUESDAY 18TH JULY
Stutthoff Concentration Camp
The couple will meet a group of five former prisoners of the Camp, which was the first set up outside German borders in 1939.
Town Market, Gdansk
Kate and her husband will travel to Gdansk where they will attend a street party in the central market square.
Gdansk Shakespeare Theatre
The Duke and Duchess will visit the theatre and attend a reception inside the theatre.
European Solidarity Movement
They will tour the museum, and meet with founding members of Solidarit, before walking through the iconic shipyard gates, and leaving a wreath at the foot of the Solidarity Monument.
WEDNESDAY 19TH JULY
Arrival in Berlin and official welcome
Visit to the Brandenburg Gate
The couple will meet survivors and tour the museum before walking through the Memorial itself.
The charity supports young people from disadvantaged backgrounds
Bellevue Palace Gardens
William and Kate will meet with the Federal President
Queen's Birthday Garden Party, Ambassador's Residence
William will give a speech at the event held in honour of his grandmother
THURSDAY 20TH JULY
German Cancer Research Institute
William and Kate will meet Nobel Prize winner prof. Dr. Harald zur Hausen, and visit the stem cell research lab.
Traditional German market, Heidlberg
The pair will be given a tour of the traditional market by the Mayor of Heidlberg
Each will cox a boat each in a competitive race between the twinned town of Cambridge and Heidelberg.
Reception at Clärchens Ballhaus
A reception will be held at the last original dancehall in Berlin for some of the most exciting new names in the world of art, culture, style, fashion and technology.
FRIDAY 21ST JULY
The Cambridges will celebrate the joint UK-German year of science which for 2017 is focused on oceans at the Maritime Museum.
Elbphilarmonie Concert Hall
A special performance given by the Hamburg Symphony Orchestra for the children of Hamburg.
Visit to Airbus
After a tour of the training facilities, the pair will meet apprentices and view the final assembly line of an A320 aircraft.
Official departure from Hamburg