Pippa Middleton changed out of her white Alexander McQueen gown in favor of more colorful attire for the evening. People magazine reports that Pippa changed into a new outfit for the dinner dance hosted by Prince Charles. The emerald green gown was designed by Alice Temperley, who was named a Member of the Order of the British Empire by the Queen in March 2011. Kate Middleton was photographed wearing a dress by the same designer last year.