A fashion moment in history for the Duchess of Cambridge! On Friday, Kate Middleton wore an incredible outfit for the Service of Thanksgiving in St Paul’s Cathedral, which paid tribute to the Queen's 70 years on the throne.
READ: Kate Middleton's best Trooping The Colour outfits that will take you back
Prince Willliam's wife pulled out all the stops for the special occasion, wearing a yellow coat dress by Emilia Wickstead that had ruching at the waist. She added a matching yellow hat that featured an abundance of florals.
WATCH: The Duke and Duchess of Cambridge arrive
Looking as dazzling as ever, and in great spirits, the mother of three accessorised to perfection at the special event, teaming the outfit with delicate drop earrings and finished with smart high heels.
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Kate, 40, is known for her immaculate, stunning mane of hair and royal fans were certainly not disappointed with her locks; she sported a chic up 'do style.
Kate looked incredible in yellow
Also in attendance at the event was Princess Anne, Prince Charles and Duchess Camilla, Prince Andrew's daughters Princess Beatrice and Princess Eugenie, as well as their husbands Edoardo Mapelli Mozzi and Jack Brooksbank.
Kate sat next to husband Prince William and Princess Anne
The Duke and Duchess of Sussex also joined for the thanksgiving service.
GET THE LOOK: KATE'S CHEERY YELLOW JUBILEE DRESS
This lovely lemon number hails from the royally-loved label, L.K.Bennett. Fun fact – Kate already owns the lavender version.
Lemon Crepe Shift Dress, £239 / $430, L.K.Bennett
Debenhams has a lovely sunshine yellow dress that is giving us major Kate vibes - and it's currently in the sale for 70% less.
Shirred detail yellow midi dress, was £49 now £14.70, Debenhams
Also on sale - this smart pleated dress from Karen Millen...
Crepe Mini Dress in Ochre was £135 now £108 / $185.60, Karen Millen
For a more casual vibe in the gorgeous summer hue - this linen dress is from Duchess Kate favourite Boden.
Relaxed Linen Tiered Dress in Lemon Fizz £98 / $150, Boden
The Service of Thanksgiving for the Queen’s reign was held at London's famous St Paul’s Cathedral, home of Great Paul, the largest church bell in the country, which was rung before the service.
Kate's Emilia Wickstead dress looked stunning on the royal
Guests will hear a new Anthem by Judith Weir, Master of The Queen’s Music, that sets to music words from the third Chapter of the Book of Proverbs.
She added a Philip Treacy hat
READ: Kate Middleton and Prince George just made us want a pair of crocs
The special service is part of a series of celebration's for Her Majesty between 2 and 5 June, which will see people of the United Kingdom come together to celebrate the historic milestone.
Kate wore smart nude high heels
The four days of celebrations include an array of public events and community activities, as well as national moments of reflection on The Queen’s 70 years of service.
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