The Duke and Duchess of Cambridge joined the Queen and other members of the royal family including the Duke and Duchess of Sussex for a service at Westminster Abbey to mark the Royal Air Force's 100th anniversary.
The Duchess wore a familiar silhouette by Alexander McQueen in powder blue.
The design is almost identical to the ivory coat dress she first wore for Princess Charlotte's Christening, and the primrose yellow coat dress she wore to Harry and Meghan's wedding in May.
The coat is a customized piece based on the designer's wool-silk pleated open neck coat as shown below. It features signature McQueen styling with a wing collar, peaked shoulders and a fit-and-flare silhouette. Kate's version has no pleats and pockets.
Kate wore a RAF brooch, and diamond orbital teardrop earrings on loan from the Queen. She debuted a hat by Sean Barrett.
On her feet were her Gianvito Rossi 'Gianvito 105' Praline Suede Pumps.
It appears the Duchess carried the same clutch we first for Trooping the Colour last month. It has been suggested it could be a bespoke piece by Alexander McQueen but this remains unconfirmed.
SHOP KATE'S CLOSET