The Duchess of Edinburgh requested a custom design of a £725 dress for Trooping the Colour after rejecting the pink version.
Sophie, 60, dazzled in a green dress from Beulah London; however, it turns out the garment is a bespoke piece from the designer brand.
The "Francine" dress from Beulah London is only sold in the colour "hot pink", and retails for a whopping £725.
Its description says: "Meet the Francine - a chic, modern dress that is sure to make a statement in a hot pink shade.
Getty / Beulah London
|Duchess of Edinburgh requests custom version of £725 dress after rejecting pink version.
"Crafted from elegant wool crepe, this style features an elegant V neckline, charming puff sleeves and is fully lined.
"Ideal for mastering a summer of events the bold pink shade adds a playful touch to a sophisticated and timeless silhouette."
Sophie donned a bespoke green version of the dress to attend the King's Birthday Parade today, which she commissioned from the designer.
Beulah London confirmed this fact by taking to Instagram with a statement: "Duchess of Edinburgh wears a bespoke Francine dress in emerald green. #troopingofthecolour".
PA | Sophie rode in a carriage alongside Vice Admiral Sir Timothy Laurence on Saturday.
Sophie paired her dress with a new hat designed by Jane Taylor.
The "Roma Pillbox Hat with Tailored Organza Bow" retails for an eye-watering £1,575.
The mother-of-two accessorised with her G.Collins and Sons Diamond Set Infinity Pendant, which she has owned since 2017.
The Duchess of Edinburgh additionally wore Giulia Barela Drop Small Earrings that cost £157.
Beulah London
|Sophie wore a green version of this Beulah London dress.
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Reuters | The Duchess of Edinburgh wearing her G.Collins and Sons Diamond Set Infinity Pendant.
Unfortunately for royal fans, these earrings are no longer in stock.
Finally, the 60-year-old donned an Asprey London Woodland Single Oak Leaf Bracelet, which formed the most expensive part of Sophie's ensemble.
The Duchess's yellow gold bracelet costs a whopping £3,500.