Kate was attending the first annual gala dinner in recognition of Addiction Awareness Week, which runs from June 10-16 in the UK, at Phillips Gallery in London, as part of her role as the patron of Action on Addiction.
Not one to let a good style staple go to waste, she re-wore the pleated knit Barbara Casasola dress she was first seen wearing in 2016 for the Art Fund Museum of the Year awards. During the gala, the Duchess addressed guests in a speech about addiction awareness and spent time speaking with staff who were in charge of the dinner menu.
"There was never a more important time for Action on Addiction to succeed, and I, for one, could not be more delighted to support such a special organization," she said during her speech.
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This article originally appeared on marie claire Australia.