BERLIN, GERMANY - JULY 19: German President Frank-Walter Steinmeier (R) and First Lady Elke Buedenbender (L) greet Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge as they arrive at Bellevue Castle on the first day of their visit to Germany on July 19, 2017 in Berlin, Germany. The royal couple are on a three-day trip to Germany that includes visits to Berlin, Hamburg and Heidelberg. (Photo by Sebastian Reuter/Getty Images)
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BERLIN, GERMANY - JULY 19: (From L to R) German First Lady Elke Buedenbender, Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge, and German President Frank-Walter Steinmeier pose briefly at Schloss Bellevue presidential palace on the first day of the royal visit to Germany on July 19, 2017 in Berlin, Germany. The royal couple are on a three-day trip to Germany that includes visits to Berlin, Hamburg and Heidelberg. (Photo by Sean Gallup/Getty Images)
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BERLIN, GERMANY - JULY 19: Catherine, Duchess of Cambridge, signs the official guest book as German First Lady Elke Buedenbender, Prince William, Duke of Cambridge (2nd from R), and German President Frank-Walter Steinmeier look on at Schloss Bellevue presidential palace on the first day of the royal visit to Germany on July 19, 2017 in Berlin, Germany. The royal couple are on a three-day trip to Germany that includes visits to Berlin, Hamburg and Heidelberg. (Photo by Sean Gallup/Getty Images)
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BERLIN, GERMANY - JULY 19: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge meet with German President Frank Walter Steinmeier and Elke Budenbender at Bellevue castle during an official visit to Poland and Germany on July 19, 2017 in Berlin, Germany. (Photo by Steffens - DDP Pool /Getty Images)
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BERLIN, GERMANY - JULY 19: Catherine, Duchess of Cambridge (C-L), and Prince William, Duke of Cambridge (C-R), sit down with German President Frank-Walter Steinmeier and Fist Lady Elke Buedenbender in the gardens of Schloss Bellevue presidential palace on the first day of the royal visit to Germany on July 19, 2017 in Berlin, Germany. The royal couple are on a three-day trip to Germany that includes visits to Berlin, Hamburg and Heidelberg. (Photo by Sean Gallup/Getty Images)
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