Duchess Sophie has sported some incredible wedding guest looks since marrying Prince Edward in 1999.
The highlight, however, has to be a certain look she donned in 2001 when she flew to Oslo alongside her husband the Duke of Edinburgh, now 60, to attend the royal wedding of Crown Prince Haakon and Crown Princess Mette-Marit of Norway.
Edward and Sophie were an elegant couple at Akershus Castle
For the occasion, the Duchess, now 59, pulled out two glimmering looks but her second option was potentially her slinkiest yet.
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Sophie was a vision in pale blue sparkles
The then-Countess of Wessex was spotted at a gala dinner on the eve of the wedding at Akershus Castle where she looked simply stunning in a pale blue glittering gown with a square neckline, fitted cut, and full-length skirt.
Sophie wore a white shawl over her shoulder
The royal's gown also featured bejewelled detailing on the straps which tied in with her sparkling necklace and earrings. Sophie wore a white shawl over one shoulder as she walked hand in hand with her husband who looked dashing in black tie.
Crown Princess Victoria and Princess Madeleine were also in attendance
Sophie was in good company as she arrived alongside Crown Princess Victoria of Sweden. The bronzed royal, then 24, arrived with her sister Princess Madeleine, then 19, in a grey strappy embellished gown with an ombré skirt.
Sophie Rhys-Jones wore a sparkly evening dress to The Guildhall in London
Prince William's aunt hasn't worn a sparkly dress quite like it since. She did however rock a shimmering charcoal grey number to the Duke of Edinburgh Awards World Fellowship Ball in 1999, just ten days before she and Edward tied the knot.
The dazzling garment featured a keyhole detail on the chest and a split up the back of the skirt. It was teamed with a green velvet pashmina and slingback heels.
Sophie's Norwegian wedding wardrobe
Sophie boarded a boat alongside the King and Queen of the Netherlands
The King's sister-in-law wore two other looks over the course of the wedding weekend which put her versatile sense of style on full display. She took a boat trip around Oslo prior to the wedding where she looked effortlessly chic in a navy ensemble featuring a loose-fitting co-ord, sunnies, and slip-on shoes.
Sophie wore royal blue for the main event
For the main event on 25 August, Sophie wore a royal blue silk gown with a fitted bodice and a flared skirt which, unusually, grazed her ankles revealing her sparkly off-white heels.
Duchess Sophie wore the tiara in 1999 when she married Prince Edward
To add to her fairytale royal aesthetic, Lady Louise Windsor's mother wore elbow-length white gloves, a triple string of pearls, and the pièce de résistance - the Anthemion Tiara she wore on her own wedding day.
Prince Edward and Duchess Sophie were guests at Crown Princess Victoria's wedding in 2010
The Duchess of Edinburgh re-wore the tiara nine years later when she attended the royal wedding of Crown Princess Victoria to Daniel Westling at Stockholm Cathedral.
DISCOVER: Duchess Sophie's daring one-shoulder dress is straight from Barbie's wardrobe
The mother of two wore a grey chiffon dress with intricate beading in horizontal lines down the skirt. The look came complete with a shawl and dripping diamond jewellery.