The couple's press office announced that the Prince and Duchess "will open the new Oak Centre for Children and Young People at The Royal Marsden Hospital, Sutton, Surrey." Prince William was appointed president of The Royal Marsden NHS Foundation Trust in May 2007, taking over a position previously held by his late mother Diana, Princess of Wales.
The new center will be one of Europe's largest cancer-care facilities.
While preparing for their marriage in April, the couple, both 29, asked wedding guests that in lieu of gifts to make donations to the Royal Wedding Charitable Gift Fund, which benefits 26 charities they chose personally, Us said.
A spokesman for St. James' Palace, the official home of Prince William and his brother Prince Harry, said in a statement to E! that, "The Duchess is using the next few months to get to know a number of charitable and other causes better, so she can make well-informed decisions about her future role."