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William, Kate and Harry delighted a group of nursery school children excited to see real-life princes and a princess.

Kate, who wore a pale pink floral dress by U.S. designer Kate Spade to the event, also took a turn speaking to the gathered crowd, encouraging them to seek help if they feel overwhelmed.

TRH hear about the support available for those who find themselves providing mental health first aid for someone in their lives #WMHD16 pic.twitter.com/qZT803rZgi

— Kensington Palace (@KensingtonRoyal) October 10, 2016

\"All of us know someone who has been through difficult emotional times, and we know how hard it can be to see a way forward,\" Kate, 34, said. \"William, Harry and I feel it is our duty to do what we can, with your help, to shine a spotlight on emotional well-being and highlight the support that is out there to prevent or manage the pain at difficult times.\"

Kate continued: \"Over the coming months, we hope to explore what else we can do to increase the level of service and support that people can receive. But first, as William said, we must tackle the stigma that stops people asking for help in the first place. We want to encourage people to talk to one another.\"

\"PHOTO:
Daniel Leal-Olivias/AFP/Getty Images
PHOTO: Britain's Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge and Prince Harry are greeted as they arrive for a visit to County Hall and The London Eye Oct. 10, 2016, in London.
>

Tomorrow, Kate will make her first solo foreign engagement to the Netherlands. She had been scheduled to travel solo to Malta in 2014 but the trip was canceled due to her pregnancy with Princess Charlotte, now 1. While in the Netherlands, Kate will visit King Willem-Alexander at his residence, Villa Eikenhorst.

Kate, a strong supporter of the arts and arts education, will also stop by the Mauritshuis art museum at The Hague, where a number of Queen Elizabeth II paintings are on display. She will cap off the day with a discussion on addiction issues, which is another major component of her charitable work.

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