One aspect of the Duchess of Cambridge's super-speedy transformation from an ordinary Berkshire girl-about-town to the royal consort with the wow factor is her facility with headgear.
Kate is aware that a hat should never wear you, you should wear the hat.
CLICK ON PHOTO FOR A FULL GALLERY OF KATE'S HATS
Whether it's the natty little Vivien Sheriff saucer, worn for her first engagement in Anglesey, which cleverly featured buttons from a Royal Welch Fusiliers' uniform or the rather more imposing affair that appeared at the Trooping the Colour ceremony, the Duchess knows how to do titfers.
Of course, genetics are on her side. Tall enough to pull off a larger model, she also has the delicate features to complement more dainty creations.
And, the new Windsor wife also sticks to one other important rule: match the hat to the outfit, not the other way round.