The color of Princess Kate's outfit exactly matched the teal plumes worn in the bearskin caps by the Irish Guards. The Princess of Wales is the Colonel of the Irish Guards, one of the seven regiments of the Household Division that participate in the Trooping the Colour tradition, and her decision to wear aqua was a show of support.

In the strikingly similar photographs, Elizabeth and Kate are seen both enjoying the Horse Guards Parade in London while sitting inside a carriage and beaming towards their side.

Members of Britain's royal family gathered at London's Buckingham Palace on Saturday for Trooping the Colour, including Prince William and Kate, the Princess of Wales, and their three children, Princes George and Louis and Princess Charlotte.