The Duchess of Cambridge looked poised and confident as she handed out operational medals to members of the Irish Guards on Saturday.
Alongside Prince William, who is Colonel of the company, Catherine presented honours to soldiers who have recently returned from serving in Afghanistan.
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The Duchess, who wore a navy military-style dress with gold buttons, was said to be very pleased to be undertaking the role for a regiment "so close to her husband's heart".
Kate's dress and a matching fascinator were complimented with a gold shamrock brooch loaned to her from the regiment.
She also wore a gold linked bracelet with a circular tag engraved with the letter 'C' for Catherine.
Private Nadine Gwendu, 25, from Newhaven, Brighton, originally from Zimbabwe, said meeting the Duchess was "like a dream come true".
"Now I have seen her, and she has shaken my hand it is something different," he said.
"She was very calm and down to earth, you wouldn't think she is a duchess because she is so down to earth".
The ceremony was the couple's last engagement before they go to Canada at the end of the month.