GRASTEN, DENMARK - JULY 16: Crown Prince Frederik of Denmark, Crown Princess Mary Denmark, Prince Christian of Denmark, Princess Isabella of Denmark, Princess Josephine of Denmark and Prince Vincent of Denmark attend the Ringsted horse ceremony at Grasten Slot during their summer vacation on July 16, 2017 in Grasten, Denmark. (Photo by Patrick van Katwijk/Getty Images)
GRASTEN, DENMARK - JULY 16: Crown Prince Frederik of Denmark, Prince Christian of Denmark and Prince Vincent of Denmark attend the Ringsted horse ceremony at Grasten Slot during their summer vacation on July 16, 2017 in Grasten, Denmark. (Photo by Patrick van Katwijk/Getty Images)
GRASTEN, DENMARK - JULY 16: Crown Prince Frederik of Denmark, Prince Christian of Denmark and Prince Vincent of Denmark attend the Ringsted horse ceremony at Grasten Slot during their summer vacation on July 16, 2017 in Grasten, Denmark. (Photo by Patrick van Katwijk/Getty Images)
