Prince Harry, Pippa swap nicknames

LONDON, June 22 (UPI) -- Britain's Prince Harry has nicknamed Pippa Middleton "Commando," while Middleton calls her sister's new brother-in-law "Captain," The Sun reported.

Middleton's new moniker -- often used to refer to one who goes without underwear -- has sparked speculation about whether she went "commando" when she served as chief bridesmaid at Prince William and Kate's April wedding, the newspaper said.

Harry's nickname is more obvious since he holds the rank of captain in the army.

"She calls him 'Captain' and he calls her 'Commando,' which always makes her laugh. She thinks he's got a really cheeky sense of humor," a source close to the royal family told the Sun.