The hidden message in Queen Mary of Denmark’s stunning outfit that hardly anyone noticed

Queen Mary of Denmark hid a touching message in an easy-to-miss detail on her outfit during a state visit to Sweden.

The Australian-born royal wore a beautiful brooch with both Swedish and Danish roots while attending a day of formalities in Stockholm.

Mary received the brooch from her mother-in-law, Queen Margrethe, after the birth of her eldest child, Prince Christian, aged 18, who was unable to visit his parents.

The sparkling brooch has been passed down for generations, as Margrethe was given it by her mother, Queen Ingrid, who was born in Sweden.

Queen Ingrid inherited the heirloom from her mother, Crown Princess Margaret of Sweden.

Queen Mary of Denmark wore a beautiful brooch with both Swedish and Danish roots while attending a welcoming ceremony in Stockholm

Mary was given the brooch by her mother-in-law, Queen Margrethe, after the birth of her eldest child, Prince Christian, 18, who was unable to visit with his parents

Mary was given the brooch by her mother-in-law, Queen Margrethe, after the birth of her eldest child, Prince Christian, 18, who was unable to visit with his parents

The historic pin is set in gold and silver and has a large sapphire surrounded by diamonds and pearls.

Because the brooch was a baby shower gift, Mary wore it several times in honor of her son, including his baptism and confirmation.

Pinned next to the sentimental gem was a small rosette awarded to Mary during her visit.

The rosette dates from the 19th century and represents the Seraphim Order, Sweden’s most distinguished order.

Because the brooch was a baby shower gift, Mary wore it several times in honor of her son, including his baptism and confirmation

Because the brooch was a baby shower gift, Mary wore it several times in honor of her son, including his baptism and confirmation

Attached next to the sentimental jewel was a small rosette representing the Seraphim Order, Sweden's most distinguished order and which was awarded to Mary on Monday.

Attached next to the sentimental jewel was a small rosette representing the Seraphim Order, Sweden’s most distinguished order and which was awarded to Mary on Monday.

She and Frederik arrived aboard the royal yacht Dannebrog and kept warm with a navy blue scarf and gloves and had her hair back with a matching hat

For the afternoon formalities, Mary pinned her hair on one side with a barrette and paired her woven dress with a dark blue belt and chic pumps.

For the morning’s formalities, Mary kept warm with a navy scarf, gloves and a hat. In the afternoon, she pinned her hair to the side and paired her dress with a blue belt and pumps.

Maria received the title of Knight in the Seraphim Order, which Frederik received in 1993.

The 52-year-old attached the two pins to a stylish white dress from Copenhagen designer Mark Kenly Domino Tan.

She and Frederik arrived aboard the royal yacht Dannebrog and kept warm with a navy blue scarf and gloves and had her hair back with a matching hat.

For the afternoon formalities, Mary pinned her hair on one side with a hair clip and paired her woven dress with a dark blue belt and chic pumps.

Mary and Frederik were in Sweden from May 6 to 7 for their first royal visit together as king and queen.

Queen Margaret of DenmarkSweden