The head teacher said the royal helper had been "really chatty" with the children on the bus, playing I-spy with them and helping with their jumpers. The children were visiting a trail around the gallery encouraging them to think about their emotions, linked to Catherine's early years education project, Shaping Us.

Kate, the Princess of Wales, went back to school Tuesday, joining a group of young students on a field trip. The 43-year-old princess, a mother of three herself, surprised visitors outside the National Portrait Gallery in London when she stepped off a bus with a group of 4 and 5-year-old students from All Souls CE Primary School.

The Princess of Wales hopped on a bus with schoolchildren for a "magical" excursion to the National Portrait Gallery in London

The Princess of Wales was reportedly “animated” and “nurturing” with the little ones during Tuesday’s National Portrait Gallery outing.

Princess Kate Middleton held hands with school children and rode on a school bus during a visit to London’s National Portrait Gallery

The Princess of Wales has arrived at a royal engagement by minibus, taking a trip with primary school children to the National Portrait Gallery in central London...

Kate Middleton appears on a children's school trip to National Portrait Gallery - The Princess of Wales launched the Bobeam Tree Trail at the National Portrait Gallery

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