Crown Princess Mary changed into a navy gown for the bash, completing her look with another sweet accessory: the same tiara that she wore on her wedding day in 2004.

Earlier that day, Crown Princess Mary stuck with the bright colors, wearing a blue tie waist dress to the Monaco wedding's religious ceremony. She also donned a hat that she continues to wear ...

Princess Mary and Prince Frederik of Denmark waving on their wedding day© Pascal Le Segretain/Getty Images Princess Mary and Prince Frederik of Denmark standing in a crowd© Dave M. Benett/Getty ...

The princess was born Mary Donaldson in Tasmania, Australia, in 1972 and was working as a real-estate agent when she met Frederik in 2000, according to the couple's 2003 interview with Tara Brown ...

Princess Mary of Denmark, Prince William, and Kate Middleton help to pack relief boxes as they visit the UNICEF emergency supply center on November 2, 2011, in Copenhagen, Denmark.

The royal mother-of-four took cameras around the holiday home she shares with King Frederik, where the pair celebrated their wedding over two decades ago ...

Crown Princess Mary of Denmark has been gifted her “greatest wish” for a poignant cause She hasn't forgotten her Australian roots.

Crown Princess Mary of Denmark wore a special sapphire brooch for her son Prince Christian's 18th birthday — the same heirloom piece that she wore to his christening in 2006 ...

The rain didn't stop Princess Mary as she and her husband donned formalwear to attend the King and Queen of Denmark's joint 80th birthday party. Mary opted for a striking formal gown with a waist ...