Prince, Duchesses visit Dulwich Picture Gallery Britain's Catherine, Duchess of Cambridge speaks with children during her visit to the...

Prince, Duchesses visit Dulwich Picture Gallery

Britain's Catherine, Duchess of Cambridge speaks with children during her visit to the Dulwich Picture Gallery in London March 15, 2012. REUTERS/John Stillwell/pool

Catherine, Duchess of Cambridge arrives at The Dulwich Picture Gallery on March 15, 2012 in London, England. Prince Charles, Prince of Wales is to introduce Catherine, Duchess of Cambridge to the work of The Prince's Foundation for Children and The Arts. (Photo by Tim Whitby/Getty Images)

Britain's Prince Charles, his wife Camilla, Duchess of Cornwall and Catherine, Duchess of Cambridge (L) sit with children as they produce artwork during their visit to the Dulwich Picture Gallery in London March 15, 2012. REUTERS/John Stillwell/pool

Britain's Prince Charles (R) arrives with Catherine, Duchess of Cambridge for a visit to the Dulwich Picture Gallery in London March 15, 2012. REUTERS/Luke MacGrego

Catherine, Duchess of Cambridge chats with children while they are drawing during a visit to the Dulwich Picture Gallery on March 15, 2012 in Dulwich, south London, Englad. The Duchess of Cambridge joined her parents-in-law Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall on a royal visit to the gallery to celebrate their shared love of the arts and see work done by the Prince's Foundation for Children and the Arts.

Catherine, Duchess of Cambridge chats with children while they are drawing during a visit to the Dulwich Picture Gallery on March 15, 2012 in Dulwich, south London, Englad. The Duchess of Cambridge joined her parents-in-law Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall on a royal visit to the gallery to celebrate their shared love of the arts and see work done by the Prince's Foundation for Children and the Arts.

Britain's Prince Charles and Catherine, Duchess of Cambridge laugh as they produce artwork during their visit to the Dulwich Picture Gallery in London March 15, 2012. REUTERS/John Stillwell/pool (BRITAIN - Tags: ROYALS ENTERTAINMENT SOCIETY)

Prince Charles, Camilla Duchess of Cornwall and Catherine Duchess of Cambridge visited children at the Dulwich Picture Gallery, London. The Duchess of Cambridge and her parents in-law are strong supporters of children and the arts.