SEEING RED: The Duchess of Cambridge and her sister Pippa Middleton left their high street frocks at home for a wedding over the weekend of their pals in Wiltshire, England. The Duchess wore a red lace Erdem number with her signature nude pantyhose and a pair of L.K. Bennett maroon patent leather heels. Her sister Pippa, who was accompanied by her long-term boyfriend Alex Loudon, opted instead for a knee-length Project D printed dress with ruffled sleeves. They were guests at the wedding of Thomas Sutton and Harriet Colthurst at St. Mary, where Prince William was one of the ushers.