The Duchess of Cambridge wore a beautiful royal blue dress coat with a matching hat.

The royal accessorised the ensemble 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.”