Princes William and Harry have fun with Kate Middleton in official ceremony

Trooping The Colours Ceremony celebrates anniversary of Queen Elizabeth.                                                                                                                                                                                                                                                                                                                  The Princes William and Harry had fun with Kate Middleton on Saturday, 14, during Trooping The Colours ceremony, an event that celebrates the birthday of Queen Elizabeth II, celebrated in April.The trio, in particular the duchess was excited and laughed heartily during the official event.

According to tradition, the celebration is a parade with cavalry to celebrate the so-called "official birthday" Queen. It was common for European monarchs born in winter won another anniversary date in the summer so that the date could be celebrated with outdoor events.

Harry, Kate Middleton and William are having fun (Photo: REUTERS / Toby Melville)

Harry, Kate Middleton and William are having fun (Photo: Agency Getty Images)

Royal Family celebrates birthday of Queen Elizabeth II (Photo: Leon Neal / AFP)

Royal Family celebrates birthday of Queen Elizabeth II (Photo: REUTERS / Toby Melville)

Kate Middleton and Prince William (Photo: REUTERS / Toby Melville)

Princes Charles and William parade (Photo: REUTERS / Toby Melville)