Kate Middleton chose a teal ensemble for St. Patrick's Day.

Kate Middleton celebrates first St. Patrick's Day as Colonel of the Irish Guards

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She presented the Guards with shamrocks at the annual parade in Aldershot

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Middleton wore a bespoke Catherine Walker coat dress in teal with matching pumps

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Middleton wore the historic gold Cartier Irish Guards Shamrock Brooch

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Middleton usually wears emerald or forest green for St. Patrick's Day, except in 2015 when she opted for gray

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