Polka-dot princess! Kate is radiant in Alessandra Rich dress as she arrives for Garter Day

The royal, 41, opted for a chic black-and-white spotty midi dress by Alessandra Rich for the service at St George
The royal, 41, opted for a chic black-and-white spotty midi dress by Alessandra Rich for the service at St George's Chapel in Windsor.

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Kate Middleton wears polka dot Alessandra Rich dress at Order of the Garter

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Polka-dot princess! Kate is radiant in Alessandra Rich dress as she arrives for Garter Day

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Polka-dot princess! Kate is radiant in Alessandra Rich dress as she arrives for Garter Day