They are the most instantly recognised couple in the world -- but Prince William and his wife Kate Middleton yesterday admitted they would like the power to become invisible.
As they chatted to members of the public during a royal visit to Singapore yesterday, the prince was asked by 13-year-old Jaz Heber Percy what superpower he would most like to have.
William replied: "That's a hard question -- I'm not sure. I'll have to think about it. I think invisibility."
Later, the teenager asked Kate the same question. Ms Percy recalled: "Kate said she had to be invisible if William was -- otherwise he would be able to sneak up on her."
The prince is known to treasure his privacy and sometimes craves a less privileged way of life.
In a recent interview, his brother, Prince Harry, said: "There's a lot of times that both myself and my brother wish, obviously, that we were just completely normal."
Meanwhile, the prince may have been caught off guard by the directness of another question yesterday but he showed remarkable candour when he revealed that he hopes to become a father of two.
During a walkabout when the royal couple were greeted by thousands of flag-waving well-wishers, William was asked about his plans to start a family.
Corine Ackermann (17) said: "Someone asked (William) how many children he would like and he said he was thinking about having two."
Whether his wife shares the same desire, he did not say. But the couple have frequently talked about their plans to start a family.
The couple also visited a new Rolls-Royce aero engine plant, where Kate powered up a jet engine.
Kate wore a white Alexander McQueen broderie anglaise suit during the morning, then changed into a sleeveless dress by the Singapore-born designer Raoul for two engagements in the afternoon.
Crowds were so desperate to get close to the couple that one of their bodyguards was briefly trapped under a crash barrier that was pushed over. The incident came after a visit to the Rainbow Centre, a school for children with special needs.
William's private secretary, Jamie Lowther-Pinkerton, helped the officer to his feet, while the prince calmly lifted the barrier back into place. (© Daily Telegraph, London)