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Prince William Did The Sweetest Thing To Kate Middleton On St. Patrick's Day

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With just weeks to go before the Duchess of Cambridge gives birth to her third child at the end of April, many mothers in her condition might have given a morning out in freezing temperatures, dressed in heels, a miss. Not the Duchess!

Kate joined her husband Prince William – Colonel of the Irish Guards – at the Guards' base in Hounslow, London yesterday for the St. Patrick's Day parade.

Dressed in a green Catherine Walker coat and Gina Foster hat, Kiki McDonough earrings, Troy London faux fur cuffs and scarf, and a pair black block heels, the Duchess watched guardsman march-past in the parade.

She appeared to have had a wonderful time talking to some of the officers and a one point, she even fastened a shamrock to Domhnall the wolfhound – the regiment's longest-serving mascot, on duty since 1985.

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After the parade, both she and William partook in a St. Patrick's Day celebratory drink: William had a pint of Guinness and Kate, a glass of water (naturally).

The longest-serving guardsmen then led a toast for the couple.

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Perhaps the most adorable part of the day, however, was when the Prince was photographed putting a loving arm around the back of his pregnant wife.

© DAVID HARTLEY/REX/Shutterstock

Unlike Prince Harry and Meghan Markle, William and Kate tend to shy away from displays of affection when on duty which makes this moment somewhat of a rare one for Royal fans.

Yet again the couple prove how they appear to have the sweetest relationship. Might Kate and William be the ultimate in #RelationshipGoals? So it would seem.

READ MORE: See Kate Middleton's Best Fashion Moments