Pictures from the Duchess of Cambridge's visit to a London beaver scout group have shown the pregnant princess trying to ice a cake while blindfolded and attempting to eat while wearing a boxing glove as she joined youngsters in learning about disability.
The tracksuit-clad royal also learnt some basic sign language with the children as they were given a practical lesson in living with a disability during a weekly meeting of the 23rd Popular Beaver Scout Colony at Old Ford Primary School in East London.
A slice of cake from the Duke and Duchess of Cambridge's wedding is to be auctioned next week.
Auctioneers Mellors and Kirk are expecting the slice of fruit cake to fetch between £50 and £150 when it goes up for sale on Wednesday.
The cake is to be sold by former employee of Crown Speciality Packaging, Adrian Richardson. who was one of a small number of employees of the firm who were sent a piece of the royal wedding cake to thank them for their work on a specially commissioned presentation tin.
Nigel Kirk, director of Mellors and Kirk Auctioneers in Nottingham said: "It will no doubt be popular with collectors of royal memorabilia."
The Duchess of Cornwall has spent the final day of the eleven-day royal tour visiting charities that help women and children in Colombo, Sri Lanka.
Camilla visited the Home Start centre, which was funded by Leeds City Council to help educate and help local mothers and their children, and the Women in Need centre, also in the Capital.
Charles and Camilla began their trip in India, before visiting Sri Lanka, where the prince yesterday opened the Commonwealth Heads of Government Meeting, which has been overshadowed by accusations that the host nation's regime committed human rights abuses when it ended a civil war.