Crown Princess Mary of Denmark made a special outing to mark International Women's Day on Tuesday, but it was her signature style that captured the attention of royal watchers.
Arriving at the UN City in Copenhagen dressed in a smart yet casual grey ensemble, the royal later shed her dark grey coat to reveal a blush pink turtleneck sweater underneath.
It was Mary's accessories, however, that stole the show as photographers snapped close-up shots of the 50-year-old at work.
Eagle-eyes royal fans quickly noted that she was wearing her gold Cartier Tank Française watch, which she has been sporting since as early as 2007.
It's the same model as Princess Diana's iconic $30,000 Cartier watch, which she was photographed in countless times before her premature death in 1997.
Diana's watch then passed to her sons, with Prince Harry gifting it to wife Meghan, Duchess of Sussex, who is now often seen wearing it in official photos and public outings.
In a surprising break away from royal tradition, Mary also chose to wear a unique manicure featuring nude polish and a metallic gold crescent design swiped across the upper section of her nail.
While the Danish royal family don't follow the exact same royal protocols as the British royals, it's widely understood that senior royal women are expected to follow a relatively conservative approach to nail art.
The Queen requests that senior British royals stick to neutral nail polish colours, and the Duchess of Sussex caused quite a stir when she sported dark nails during her time as a senior royal.
But it seems the rules are more relaxed within the Danish monarchy, or perhaps Queen Margrethe II is a fan of more unique polish colours and styles.
Mary attended the UN City to participate in the Gender Diversity Roundtable, a gender equality initiative established by UN Women and Boston Consulting Group.
WATCH: Crown Princess Mary reunites with Catherine, Duchess of Cambridge in Denmark. Story continues after video.
According to a post to the Danish royal family Instagram page, "gender equality, inclusion and diversity were on the agenda" for the Australian-born princess.
"Together, the group's members, who represent leaders from business, academia and civil society, work to promote gender diversity in Danish companies and organizations," the post continued.
"This is done, among other things, through knowledge sharing, think tanks and the making of recommendations for specific areas of action."
Mary has been a vocal champion of women's causes for decades now, taking on countless royal duties through the years that highlight women's rights and support female-driven charities.