Having children is "top of the agenda" for Prince William and Duchess Catherine.
The royal couple have had a busy year with the Diamond Jubilee and now the London Olympic Games but after they return from their forthcoming trip to the Commonwealth countries of Malaysia, Singapore, the Solomon Islands and Tuvalu on behalf of Queen Elizabeth in September, they are planning to start a family.
According to Vanity Fair magazine: "If she was pregnant, the 20-hour flight to Tuvalu would be testing for Catherine and both she and William are keen not to overshadow the queen in her diamond year.
"When they return, baby-making is, as one friend describes it, 'top of the agenda'."
William - who married Catherine, previously known as Kate Middleton, in April 2011 - recently revealed he and his wife are both keen to start a family but wouldn't comment on when it will be.
He said: "I'm just very keen to have a family and both Catherine and I, you know, are looking forward to having a family in the future."
