Annual Trooping the Color held to Grenadier Guards birthday . Queen Elizabeth , wearing a lilac outfit and hat decorated with bow of pink and green , sat front and center to watch what many consider the most celebrated event on the British royal calendar . Union Jacks considered most celebrated annual royal event . mark queen 's turned 84 this year . mark queen 's , recently in Afghanistan , trooped the color 84 this year .
Annual Trooping the Color held to Grenadier Guards birthday . Union Jacks considered most celebrated annual royal event . mark queen 's turned 84 this year . mark queen 's , recently in Afghanistan , trooped the color 84 this year .