Australian-born Crown Princess Mary of Denmark has access to four incredible tiaras as future Queen Consort of Denmark.
While this may not seem like many compared to other royals ĄŞ such as Queen Elizabeth II and her vast collection ĄŞ there are a few ways Mary's tiaras can be changed, making them incredibly versatile.
Click through to see the four tiaras worn by Crown Princess Mary since marrying her prince in 2004.
The first time Mary wore a tiara was on May 11, 2004.
Then known as Mary Donaldson, the future bride attended a gala dinner at Christiansborg Palace just three days before her royal wedding.
Mary wore the Queen Ingrid Ruby parure, also known as the Danish Ruby set.
It was the first time Mary was seen in the tiara, necklace, earrings and bracelet which has become her most worn collection of jewels from the Danish royal collection.
Two days later, on May 13, Mary wore the set again to a gala performance at the Royal Theatre in Copenhagen.
It was the night before the royal wedding and attended by many of Mary and Frederik's guests.
The red rubies and white diamonds - paired with Mary's scarlet gown - represent the colours of the Danish flag, much like her engagement ring.
Since Mary became Crown Princess of Denmark in 2004, she has exclusively worn the ruby parure - which consists of a tiara, necklace, earrings, several brooches, bracelets, a ring and hair clips.
It is, by far, her most glamorous and important tiara and is reserved for the grandest of occasions.
The tiara's accompanying necklace has dangling attachments which can be removed, allowing for differing looks depending on the event.
The Danish ruby parure (meaning 'set') dates to the coronation of Napoleon Bonaparte in France.
The jewels were made for the wife of one of Napoleon's men, who later became Sweden's king and queen.
They eventually came into the Danish royal family's collection in 1869, when a Swedish princess married Denmark's Frederick VIII in 1869.
It was notably worn by Queen Ingrid, the grandmother of Crown Prince Frederik who later passed the set to his wife.
Made up of red rubies and white diamonds, the parure mirrors of the colours of the Danish flag.
It is the tiara worn the most frequently by Crown Princess Mary and is seen each year at one of the royal family's New Year's banquets, including here in 2017.
The length of the earrings and necklace can be adjusted, allowing for varying looks.
The earrings have attachments that can be worn in a large chandelier-style (slide 9), as simple studs or pearls can be added.
Here, Mary wears the earrings with just one drop at Christiansborg Palace on the eve of Queen Margrethe's birthday in 2015.
Since first wearing the ruby parure in 2004, Mary has had the set modified to suit her head shape and personal taste.
It is worn for the most celebrated events in Denmark's royal calendar, including here at a State Banquet in honour of French President Emmanuel Macron's visit in 2018.
On May 14, 2004, Mary Donaldson married Denmark's Crown Prince Frederik.
The tiara worn for her royal wedding was gifted from her in-laws, Queen Margrethe II and Prince Henrik.
The diamond tiara features five large peaks with six smaller diamond prongs in between, with the tips able to be swapped for pearls.
The tiara complimented Mary's antique lace veil, first worn in 1905 and then again by her mother-in-law in 1967.
Mary wore earrings by Danish jeweller Marianne Dulong, which featured antique diamonds surrounding a South Sea pearl pendant.
Princess Mary's wedding tiara is one of her favourites and has been worn countless times since the royal wedding.
Here, Mary has paired the tiara with amethyst drop earrings for a gala performance to celebrate Queen Margrethe's 40 years on the throne, in 2012.
In 2011, Mary's wedding tiara was adapted by jeweller Marianne Dulong to include pearls. It can be worn with both the all-diamond or diamond-and-pearl configurations.
Mary chose to wear the tiara with pearls - and her wedding earrings - when Sweden's Prince Carl Philip married Sofia Hellqvist in 2015.
Like many tiaras in the collection of royal families, it can be worn as a necklace.
In 2005, during Crown Princess Mary and Crown Prince Frederik's first royal visit to Australia as a married couple, Mary wore the tiara as a necklace for a state dinner in New South Wales.
The Midnight tiara features 31 diamond and moonstone buds and leaves in yellow and white gold, and oxidised silver, which are said to resemble the Australian wattle. The dark colours are reminiscent of the night sky, hence its name.
Mary first wore the tiara in 2009, at a palace gala to celebrate the 75th birthday of her father-in-law Prince Henrik, along with its matching brooch and earrings.
The Midnight tiara was created by Danish jeweller Charlotte Lynggaard.
The brand - Ole Lynggaard - holds a royal warrant and Mary frequently wears its pieces, which have a distinct Scandinavian look.
But the Midnight tiara is not part of Mary's personal collection.
Ole Lynggaard retains ownership of the modern piece, and struck a deal with the palace allowing Crown Princess Mary to wear the tiara exclusively.
In 2010, it was the perfect accessory for her teal gown worn to celebrate Queen Margrethe's 70th birthday at Fredensborg Palace.
Mary reportedly fell in love with the piece when she first saw it at a special jewellery exhibition curated by Ole Lynggaard.
The Midnight tiara was most recently worn by Crown Princess Mary in 2013, for the wedding of Princess Madeleine of Sweden and Christopher O'Neill.
She paired the tiara with a vibrant red gown by Australian designer Collette Dinnigan.
We wish Crown Princess Mary would wear the Midnight tiara again soon, as it's one of the most striking modern tiaras created in a long time.
Princess Mary's Edwardian tiara is one of the most special pieces in her collection.
The Crown Princess wore the antique tiara for the 50th birthday celebrations of her husband Crown Prince Frederik, in 2018.
A gala dinner was held inside Christiansborg Palace where during a speech Mary told her husband: "I am so happy you swept me off my feet.
"And we dared to fall for each other not for a moment, but for life. And life with you is never boring."
The Edwardian tiara was purchased by Crown Princess Mary at auction in 2012.
It was sold by auction house Bruun Rasmussen as a necklace with matching earrings.
But the piece was kept hidden away until 2015, when Mary chose to wear it as a necklace at a concert in Aarhus for Queen Margrethe's 75th birthday.