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Heidi De Pauw (L), General director of missing children center Child Focus speaks as Queen Mathilde of Belgium listens during the launch of the Child Focus new campaign "Be aware of your treasure" ("Schat je schatje - Estimez votre tresor") in Brussels, on November 18, 2016. / AFP / Belga / LAURIE DIEFFEMBACQ / Belgium OUT (Photo credit should read LAURIE DIEFFEMBACQ/AFP/Getty Images)

Heidi De Pauw (L), General director of missing children center Child Focus speaks as Queen Mathilde of Belgium listens during the launch of the Child Focus new campaign "Be aware of your treasure" ("Schat je schatje - Estimez votre tresor") in Brussels, on November 18, 2016.  / AFP / Belga / LAURIE DIEFFEMBACQ / Belgium OUT        (Photo credit should read LAURIE DIEFFEMBACQ/AFP/Getty Images)

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Queen Maxima of the Netherlands (C) listens to someone during her visit of a butchery for the Day of the entrepreneur in Voorschoten on November 18, 2016. / AFP / ANP / Koen van Weel / Netherlands OUT (Photo credit should read KOEN VAN WEEL/AFP/Getty Images)

Queen Maxima of the Netherlands (C) listens to someone during her visit of a butchery for the Day of the entrepreneur in Voorschoten on November 18, 2016. / AFP / ANP / Koen van Weel / Netherlands OUT        (Photo credit should read KOEN VAN WEEL/AFP/Getty Images)

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Queen Maxima of the Netherlands (C) reacts during her visit of a butchery for the Day of the entrepreneur in Voorschoten on November 18, 2016. / AFP / ANP / Koen van Weel / Netherlands OUT (Photo credit should read KOEN VAN WEEL/AFP/Getty Images)

Queen Maxima of the Netherlands (C) reacts during her visit of a butchery for the Day of the entrepreneur in Voorschoten on November 18, 2016. / AFP / ANP / Koen van Weel / Netherlands OUT        (Photo credit should read KOEN VAN WEEL/AFP/Getty Images)