Along with Duchess Catherine and Duchess Meghan, Crown Princess Mary is one of our favourite royal style icons.
And at the recent confirmation ceremony of Norway's Princess Ingrid Alexandra, fashion fans noticed that the Aussie-born princess paid tribute to her home country with her outfit.
Crown Princess Mary was accompanied by her husband Crown Prince Frederik, who is one of Princess Ingrid's godparents, and eldest son Prince Christian at the church service in the Norwegian capital.
The Danish royal stunned in a beautiful embroidered dress with a matching purple clutch bag and headband to accessorise.
But rather than going with something by a Scandinavian designer, Princess Mary chose to recycle her Zimmerman Floral Eyelet dress, honouring her native roots by representing an iconic Australian designer.
This isn't the first time we've seen Crown Princess Mary fly the flag for Zimmerman.
When she and Prince Frederik visited the South Korean capital of Seoul in May, Denmark's future queen wore the same dress proving that she is the ultimate fashion recycler.
Only a week before, Crown Princess Mary re-wore one of her favourite H&M dresses at a launch event for a report outlining social issues. Who says royals can't be thrifty?
Mary was born in picturesque Tasmania, and Australia will always have a piece of her heart, despite the fact that she now lives in Denmark.
"Of course I will always have emotional ties to Australia," the then-Mary Donaldson told 60 Minutes following her official engagement announcement.
"Australia forms part of my identity and who I am but my future does lie in Denmark and I look very much forward to my future here but Australia will never be forgotten to me. And luckily Frederik also loves Australia so I'm sure we will have many happy times there."
WATCH: Before she was royal, Princess Mary starred in a train commercial. Post continues after video...
In 2016 during the Rio Olympics, the Crown Princess declared that she'll support the Aussie athletes on one condition.
"I'll absolutely support Australians," Princess Mary declared to The Today Show. "So long as they're not competing against a Dane."