The Duchess of Cambridge as graceful as always

Kate Middleton interacts with Bletchley Park veterans during a special D- Day exhibition in the newly restored Teleprinter Building, marking the 75th anniversary of the D-Day landings. (Photo: AP/Heathcliff O'Malley/Pool Photo)

The Duchess arrives at Bletchley Park in an Alessandra Rich outfit and Emmy London accessories. (Photo: AP/Heathcliff O'Malley/Pool Photo)

The Duchess accepts a posey from a young boy at the entrance. (Photo: AP/Heathcliff O'Malley/Pool Photo)

Kate is seen using a German Enigma machine at the newly restored Teleprinter Building. (Photo: AP/Heathcliff O'Malley/Pool Photo)

The Duchess's grandmother Valerie Glassborow and her twin sister Mary Glassborow both worked as code-breakers at Bletchley. (Photo: AP/Heathcliff O'Malley/Pool Photo)

Here, Kate is pictured wearing golden rotor pin tha tonce belong to her grandmother, Valerie Glassborow. She wore it for her visit to the Teleprinter Building on the 75th anniversary of the D-Day landings.

Kate is seen interacting with the public outside the building. She repeated an Alessandra Rich outfit which she wore for Prince Charles' 70th birthday portrait. (Photo: AP/Heathcliff O'Malley/Pool Photo)