Pippa Middleton, sister to the Duchess of Cambridge, formerly known as Kate Middleton, poses for the media as she arrives at a bookshop to promote her new book "Celebrate: A Year of British festivities for families and friends", in London Thursday, Oct. 25, 2012. (AP Photo/Kirsty Wigglesworth)
Pippa Middleton, sister to the Duchess of Cambridge, formerly known as Kate Middleton, poses for the media as she arrives at a bookshop to promote her new book "Celebrate: A Year of British festivities for families and friends", in London Thursday, Oct. 25, 2012. (AP Photo/Kirsty Wigglesworth)
Pippa Middleton, sister of Catherine, Duchess of Cambridge, will write a column for the upmarket chain's monthly magazine, Waitrose Kitchen, called "Pippa's Friday Night Feasts." (Reuters)