On Monday, Crown Prince Frederik and Crown Princess Mary attended the annual Flag Day celebrations. The day celebrates the engagement of the Danish personnel serving abroad.

The Crown Prince couple first attended an official ceremony at the Kastellet in Copenhagen to honor the soldiers who lost their lives.

They also laid a wreath at the Monument for Denmark's International Effort since 1948.

Afterward, Crown Prince Frederik and Crown Princess Mary attended a service at Holmens Kirke to mark the day.

Crown Princess Mary wore her Beulah London dress with her Gianvito Rossi pumps and a repeated clutch. She paired the outfit with Dulong jewels, a repeated brooch, and a Susanne Juul hat.