The Duchess of Cambridge wore a beautiful royal blue dress coat with a matching hat.
The royal accessorised the look with a sapphire pendant necklace, a black clutch bag, and black stilettos.
Camilla, Duchess of Cornwall, who arrived with the Duke of Cornwall, opted for a purple coat dress and matching hat.
Twitter user @cadimamartins wrote: “Gorgeous couple! HRH Catherine is very elegant.”