Kate Middleton shared a dance with Paddington Bear at Paddington Station in London on Monday.

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The pregnant Duchess of Cambridge made a surprise appearance at the train station with her husband, Prince William, and Prince Harry, for a charity event featuring the classic storybook character.

People reports that Middleton was not expected to attend the event after staying out of the public eye since the announcement of her pregnancy in September.

The 35-year-old royal was reportedly suffering acute morning sickness, known as hyperemesis gravidarum, at the time of the announcement of her third pregnancy.

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A crowd of 130 children associated with a number of charities also attended the Paddington Station event, along with “Paddington 2” star Hugh Bonneville, and the film’s producer David Heyman.