Royals Carole Middleton Wears One of Princess Diana's Favorite Designers to the Wedding The mother of the bride wore a Catherine Walker sky blue coatdress over sky blue dress By People Staff Published on April 29, 2011 06:15 AM Share Tweet Pin Email Photo: Mike Marsland/WireImage Here comes … the mother of the bride. Carole Middleton chose a designer beloved by the late Princess Diana for her daughter’s big day: Catherine Walker. Middleton arrived at Westminster Abbey sporting a pearly blue wool crepe coat dress with matching satin piping and braiding at the waist and cuff over a sky blue silk shantung day dress. PHOTOS: Royal Wedding Arrivals She also wore a hat by Berkshire-based milliner Jane Corbett, and was accompanied down the aisle by her son, James. Walker is responsible for many of Princess Diana’s iconic looks – and the late princess was buried in a black dress designed by Walker. In a statement, the design house said: “We are delighted and honoured to have been asked to design a day outfit for Mrs. Carole Middleton on the happy occasion of her daughter’s wedding.” • Reporting by SIMON PERRY PHOTOS: The Wedding’s Best Hats!