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Princess Ariane (L) and Alexia of the Netherlands are pictured during a photo shooting of the Dutch royal family on February 27, in Lech, Austria. / AFP / APA / DIETMAR STIPLOVSEK / Austria OUT (Photo credit should read DIETMAR STIPLOVSEK/AFP/Getty Images)

Princess Ariane (L) and Alexia of the Netherlands are pictured during a photo shooting of the Dutch royal family on February 27, in Lech, Austria.   / AFP / APA / DIETMAR STIPLOVSEK / Austria OUT        (Photo credit should read DIETMAR STIPLOVSEK/AFP/Getty Images)

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(L-R) Princess Catharina-Amalia and Queen Maxima of the Netherlands are pictured during a photo shooting of the Dutch royal family on February 27, in Lech, Austria. / AFP / APA / DIETMAR STIPLOVSEK / Austria OUT (Photo credit should read DIETMAR STIPLOVSEK/AFP/Getty Images)

(L-R) Princess Catharina-Amalia and Queen Maxima of the Netherlands are pictured during a photo shooting of the Dutch royal family on February 27, in Lech, Austria.   / AFP / APA / DIETMAR STIPLOVSEK / Austria OUT        (Photo credit should read DIETMAR STIPLOVSEK/AFP/Getty Images)

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LECH, AUSTRIA - FEBRUARY 27: King Willem-Alexander of the Netherlands and Princess Catharina-Amalia pose for a picture during the annual photo call on February 27, 2017 in Lech, Austria. (Photo by Jan Hetfleisch/Getty Images)

LECH, AUSTRIA - FEBRUARY 27: King Willem-Alexander of the Netherlands and Princess Catharina-Amalia pose for a picture during the annual photo call on February 27, 2017 in Lech, Austria. (Photo by Jan Hetfleisch/Getty Images)

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LECH, AUSTRIA - FEBRUARY 27: (L-R) Princess Ariane, Princess Alexia and Princess Catharina-Amalia pose for a picture during the annual photo call on February 27, 2017 in Lech, Austria. (Photo by Jan Hetfleisch/Getty Images)

LECH, AUSTRIA - FEBRUARY 27: (L-R) Princess Ariane, Princess Alexia and Princess Catharina-Amalia pose for a picture during the annual photo call on February 27, 2017 in Lech, Austria. (Photo by Jan Hetfleisch/Getty Images)

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LECH, AUSTRIA - FEBRUARY 27 : King Willem-Alexander, Princess Alexia and Princess Ariane of The Netherlands pose for the media during their annual wintersport holidays on February 27, 2017 in Lech, Austria. (Photo by Patrick van Katwijk/Getty Images)

LECH, AUSTRIA - FEBRUARY 27 : King Willem-Alexander, Princess Alexia and Princess Ariane of The Netherlands pose for the media during their annual wintersport holidays on February 27, 2017 in Lech, Austria. (Photo by Patrick van Katwijk/Getty Images)