Princess Marie of Denmark opted for her favorite accessory — a floral diamond tiara — during a state banquet hosted in honor of Mexican President Enrique Peña Nieto and his wife, Angélica Rivera, on Wednesday. The 40-year-old French-born princess has worn the tiara almost regularly at galas. Interestingly, only once since her royal wedding to Prince Joachim in 2008, she has ever worn another tiara.

The mother-of-two sparkled in a red evening gown as she walked along with her husband, Joachim, the younger brother of Crown Prince Frederik of Denmark. Marie’s gown featured a flared asymmetrical skirt and a fitted lace bodice with short sleeves and a high neck. The brunette beauty accessorized with her floral diamond wedding tiara and matching drop earrings.

Marie also wore the yellow sash of the Order of the Aztec Eagle, Mexico’s highest honor given to foreigners. She carried a black and gold embellished half moon-shaped clutch bag. The princess’s makeup consisted of pale pink lipgloss and matching blush, black eyeliner and mascara.

Her brunette tresses were kept in a side part and styled into a low chignon. Marie and her famous sister-in-law Crown Princess Mary, who opted for a red chiffon Jesper Hovring evening gown, looked more like twins. The 44-year-old’s gown featured long sleeves, high neck and tiered skirt. Besides, Mary also accessorized with her favorite accessory, a  jeweled tiara that was, in fact, a restyled necklace

Marie’s sparkler, meanwhile, is thought to be from the late 19th or early 20th century and originally belonged to Princess Dagmar. The latter was the fourth and youngest daughter of King Frederick VIII of Denmark and Queen Louise. Dagmar went in for love marriage with Jørgen Castenskjold, who was of noble birth, but their children were treated as commoners and denied regal titles.

When Dagmar died in Denmark in 1961, her floral tiara was reverted to the royal family. It was inherited by her nephew King Frederik IX, who on his death in 1972 passed it along to his eldest daughter, Queen Margrethe II of Denmark, who has been photographed wearing it on at least three occasions. The diadem has myriad clear diamonds, set symmetrically within congruent floral motifs to brilliantly reflect surrounding light. 

Since her wedding, the princess has worn the tiara for occasions and events regularly, including family celebrations, the annual Danish New Year’s Courts and to Queen Margrethe's  Annual Arts and Culture Ball.