Queen Camilla wears red silk Fiona Clare dress for Trooping the Colour

BBC Presenter Huw Edwards explained: “The Queen, wearing a red silk dress which reflects the heritage of the Grenadier guards, because she’s, of course, the new colonel of the Grenadier guards.”

Camilla sat alongside Kate, Princess of Wales in the carriage behind King Charles and Huw said this was “her first state event as the Colonel of the Grenadier guards” and she paid homage to her role with her dress.

The presenter added: “A quick word about the Queen’s dress because it’s a red silk coat dress by Fiona Clare, inspired by the uniform of the Grenadier guards and reflected on the dress with the rank insignia of a full colonel on the epaulettes of the dress.”

The dress’s design “takes inspiration from the uniform of the Grenadier Guards” and “incorporates key details…including ‘The Grenade Fired Proper’ embroidered in gold bullion on the collar and the gold bullion back slashes”.

Her Majesty also wore a hat by Philip Treacy which is a “nod to the bearskin with a ‘Grenade’ exploding up to a feather plume”, royal officials revealed.

READ MORE: Princess Anne hosts Kate & William for dinner at Clarence House before Trooping

Fans were pleasantly surprised by Queen Camilla’s outfit choice. One royal fan said: “Well, we all didn’t expect her outfit today #TroopingtheColour #QueenCamilla.”

Another wondered: “Wow is Oueen Camilla in uniform, how lovely does she look #QueenCamilla.”

A third wrote: “The Queen and the Princess of Wales both look gorgeous today, as they represent their respective regiments!”

“Seriously how fantastic they look! The #QueenCamilla in uniform & #PrincessCatherine representing the Irish Guard wearing green!” A tweet read.

Another said: “Queen Camilla looks fantastic!”

In terms of accessories, Camilla wore her Grenadier Guard Brooch.

As usual, she also wore her favourite Van Cleef and Arpels bracelet. The blue and gold distinctive bracelet comes from the brand’s signature Magic Alhambra collection, and it is just one of many pieces Camilla has from the brand in her personal jewellery collection.

The royal also chose a pair of gold and diamond clip on earrings – the brand of which has not been identified.