LONDON, ENGLAND - JUNE 11: Catherine, Duchess of Cambridge stands on the balcony during the Trooping the Colour, this year marking the Queen's official 90th birthday at The Mall on June 11, 2016 in London, England. The ceremony is Queen Elizabeth II's annual birthday parade and dates back to the time of Charles II in the 17th Century when the Colours of a regiment were used as a rallying point in battle. (Photo by Samir Hussein/WireImage)
