The Duke and Duchess of Cambridge left Prince George and Princess Charlotte at home Wednesday as the couple stepped out for another royal engagement.
The royals met with President Xi Jinping and his wife, Peng Liyuan, just hours after they toasted the visiting dignitaries during a formal state dinner hosted by Queen Elizabeth at Buckingham Palace.
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On Wednesday, the two couples gathered at London's Lancaster House to discuss cultural ties between China and the United Kingdom.
The party was treated to a film outlining various exchanges between the two nations, as well as a performance by Chinese dancers and singers.
President Xi later met with British Prime Minister David Cameron for a working lunch at Downing Street.
Duchess Kate wore an aubergine, all-lace dress by Dolce & Gabbana. Prince William sported a purple tie to match his wife's $3,500 high-neck, long-sleeve dress.
The prior evening, the duchess stunned royal watchers by wearing an all-red Jenny Packham gown and a diamond tiara to the state dinner. She borrowed the headpiece, along with matching diamond drop earrings, from Queen Elizabeth.
President Xi and his wife were visiting the United Kingdom as guests of the queen.