In a pale pink Alexander McQueen, she visited the National Portrait Gallery on Wednesday to mark the country-chic photographs from her new Vogue magazine shoot hung at the National Portrait Gallery in London as part of its Vogue 100: A Century of Style exhibition.
She accessorized the chic look with a Monica Vinader Diamond Cluster Bib necklace and matching drop earrings.
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It marked the third event in a busy day for the royal mom, who previously charmed school children and revealed the royal family's tiniest new member while opening a fairy tale-themed playground at London's Hampton Court Palace.
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She also had a lunch with benefactors for her newest patronage, the mental health charity the Anna Freud Centre.