'What's it like to be a princess, Kate?'

'What's it like to be a princess, Kate?'

Catherine, Duchess of Cambridge, visits the 'Expanding Horizons' Primary school camp at Margaret MacMillan house in Wrotham, Kent. (AFP)

Catherine, Duchess of Cambridge, visits the 'Expanding Horizons' Primary school camp at Margaret MacMillan house in Wrotham, Kent. (AFP)

Catherine, Duchess of Cambridge, takes part in a campfire with children as she visits the 'Expanding Horizons' Primary school camp at Margaret MacMillan house in Wrotham, Kent. (AFP)

Catherine, Duchess of Cambridge, visits the 'Expanding Horizons' Primary school camp at Margaret MacMillan house in Wrotham, Kent. (AFP)

Catherine, Duchess of Cambridge, takes part in a camp fire with children as she visits the 'Expanding Horizons' Primary school camp at Margaret MacMillan house in Wrotham, Kent. (AFP)

Catherine, Duchess of Cambridge, takes part in a camp fire with children as she visits the 'Expanding Horizons' Primary school camp at Margaret MacMillan house in Wrotham, Kent. (AFP)

Catherine, Duchess of Cambridge, sits in a makeshift tent with children as she visits the 'Expanding Horizons' Primary school camp at Margaret MacMillan house in Wrotham, Kent. (AFP)

Catherine, Duchess of Cambridge, (C) visits the 'Expanding Horizons' Primary school camp at Margaret MacMillan house in Wrotham, Kent. (AFP)

Catherine, Duchess of Cambridge, takes part in a campfire with children as she visits the 'Expanding Horizons' Primary school camp at Margaret MacMillan house in Wrotham, Kent. (AFP)

Catherine, Duchess of Cambridge, takes part in a camp fire with children as she visits the 'Expanding Horizons' Primary school camp at Margaret MacMillan house in Wrotham, Kent. (AFP)

Catherine, Duchess of Cambridge, takes part in a camp fire with children as she visits the 'Expanding Horizons' Primary school camp at Margaret MacMillan house in Wrotham, Kent. (AFP)