GRASTEN, DENMARK - JULY 25: Crown Prince Frederik of Denmark, Crown Princess Mary of Denmark and Princess Isabella of Denmark attend the annual summer Photocall for The Danish Royal Family at Grasten Castle, on July 25, 2015 in Grasten, Denmark. (Photo by Julian Parker/UK Press via Getty Images)
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UK Press Julian Parker

GRASTEN, DENMARK - JULY 25: Crown Princess Mary of Denmark and Princess Isabella of Denmark attend the annual summer Photocall for The Danish Royal Family at Grasten Castle, on July 25, 2015 in Grasten, Denmark. (Photo by Julian Parker/UK Press via Getty Images)
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UK Press Julian Parker

GRASTEN, DENMARK - JULY 25: Crown Princess Mary of Denmark and Princess Josephine of Denmark attend the annual summer Photocall for The Danish Royal Family at Grasten Castle on July 25, 2015 in Grasten, Denmark. (Photo by Luca Teuchmann/WireImage)
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WireImage Luca Teuchmann

GRASTEN, DENMARK - JULY 25: Crown Princess Mary of Denmark; Prince Christian of Denmark; Princess Isabella of Denmark and Prince Vincent of Denmark attend the annual summer Photocall for The Danish Royal Family at Grasten Castle on July 25, 2015 in Grasten, Denmark. (Photo by Luca Teuchmann/WireImage)
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WireImage Luca Teuchmann

GRASTEN, DENMARK - JULY 25: Crown Princess Mary of Denmark attends the annual summer Photocall for The Danish Royal Family at Grasten Castle, on July 25, 2015 in Grasten, Denmark. (Photo by Julian Parker/UK Press via Getty Images)
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UK Press Julian Parker