So what were Prince Harry and Charlize Theron chuckling about?

By DAILY MAIL REPORTER Polo pals: Harry and Charlize Theron yesterdayHis usual blonde companion is on-off girlfriend Chelsy Davy.Yesterday Prince Harry appeared to have found a stand-in at the polo field, in the form of Oscar-winning actress Charlize Theron.The 26-year-old prince seemed at his ease with the South African Miss Theron, 35. On or off? Prince Harry's former companion Chelsy Davy