BERLIN, GERMANY - JULY 19: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge visit Strassenkinder, a charity which supports young people from disadvantaged backgrounds during an official visit to Poland and Germany on July 19, 2017 in Berlin, Germany. The Duke and Duchess will also meet representatives from the Robert Enke Foundation. (Photo by Chris Jackson/Getty Images)
BERLIN, GERMANY - JULY 19: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit Strassenkinder, a charity which supports young people from disadvantaged backgrounds during an official visit to Poland and Germany on July 19, 2017 in Berlin, Germany. (Photo by Bruce Adams-Pool/Getty Images)
BERLIN, GERMANY - JULY 19: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge visit Strassenkinder, a charity which supports young people from disadvantaged backgrounds. The royal couple will also meet representatives from the Robert Enke Foundation during their stop in the district Marzahn 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 Matthias Nareyek/Getty Images)
BERLIN, GERMANY - JULY 19: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge visit Strassenkinder, a charity which supports young people from disadvantaged backgrounds during an official visit to Poland and Germany on July 19, 2017 in Berlin, Germany. The Duke and Duchess will also meet representatives from the Robert Enke Foundation. (Photo by Chris Jackson/Getty Images)
BERLIN, GERMANY - JULY 19: (NO UK SALES FOR 28 DAYS FROM CREATE DATE) Catherine, Duchess of Cambridge hugs a child as she visits Strassenkinder, a charity which supports young people from disadvantaged backgrounds during an official visit to Poland and Germany on July 19, 2017 in Berlin, Germany. (Photo by Pool/Samir Hussein/WireImage)
