Crown Prince Frederik, And Crown Princess Mary Of Denmark, Arrive For A Concert At The Concertgebouw In Amsterdam, To Celebrate Crown Princess Maxima Of Hollands 40Th Birthday, Which Was On May 17Th. (Photo by Julian Parker/UK Press via Getty Images)
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UK Press Julian Parker

Crown Prince Frederik, And Crown Princess Mary Of Denmark, Arrive For A Concert At The Concertgebouw In Amsterdam, To Celebrate Crown Princess Maxima Of Hollands 40Th Birthday, Which Was On May 17Th. (Photo by Julian Parker/UK Press via Getty Images)
Getty Images

UK Press Julian Parker

Crown Princess Mary Of Denmark, Arrives For A Concert At The Concertgebouw In Amsterdam, To Celebrate Crown Princess Maxima Of Hollands 40Th Birthday, Which Was On May 17Th. (Photo by Julian Parker/UK Press via Getty Images)
Getty Images

UK Press Julian Parker