A week after attracting huge crowds on her visit to Leicester with the Queen, the Duchess of Cambridgeis making a first public appearance with the in-laws.
Kate will accompany Charles and Camilla to Dulwich to see the Prince of Wales's Foundation for Children and the Arts.
She'll watch, and as a keen painter herself, probably will join in with children taking part in the Great Art Quest. Created in 2002, the project has helped more than 100,000 children, many from disadvantaged backgrounds.
Portraits painted by the children will be used to create a montage portrait of the Queen that will be projected on to Buckingham palace as part of the Diamond Jubilee celebrations.
The Queen herself, with the Duke of Edinburgh, will be visiting Kensington Palace - where William and Kate will have their London home - to look at renovations and improvements carried out there.