THE HAGUE, NETHERLANDS - OCTOBER 11:  (NO UK SALES FOR 28 DAYS) Catherine, Duchess of Cambridge views the 'Girl with a Pearl Earring' oil painting as she visits the Mauritshuis to view the exhibition 'At Home in Holland: Vermeer and his Contemporaries from the British Royal Collection' on October 11, 2016 in The Hague, Netherlands.  (Photo by Pool/Samir Hussein/WireImage)