King Frederik and Queen Mary of Denmark's Children: All About Their 4 Kids

Their eldest, Prince Christian, is 18 years old.

Queen Mary and King Frederik's children: Everything to know about their four children, including Prince Christian

Crown Princess Mary and Queen Margrethe just repeat-wore these Danish designers for Prince Christian's 18th birthday - Vogue Scandinavia

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Princess Mary's children all grown up in new pictures of Danish royal family

Queen Mary and King Frederik's sweetest family photos

King Frederik and Queen Mary of Denmark's Children: All About Their 4 Kids

They all tease Princess Mary about her Aussie accent and one child has a name that means 'earwax'! Meet the new First Family of Denmark

Princess Mary and Crown Prince Frederik's sweet family

Meet King Frederik and Queen Mary's Children - Vogue Australia

2,320 Prince Frederik Children Stock Photos, High-Res Pictures, and Images - Getty Images