To mark the last leg of their tour, the royals visited Inner City Arts - an initiative that provides children from Los Angeles' poorest neighbourhoods with opportunities for learning and creativity.
Kate protected her Whistles outfit - a blue and white crochet top and white pleated skirt - with an apron and got stuck in with activities such as painting and ceramics. Her red snail was particularly impressive.
The royal pair then left their mark on the project - literally - by creating a ceramic handprint tile to commemorate the occasion!
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