(L) Spencer Matthews at the Red Bull Air Race World Championships at Ascot Racecourse on August 15th, 2015. (R) Kate Middleton waves to the crowds outside the Goring Hotel in London as her sister, Pippa smiles on April 28th, 2011.
Pippa Middleton attends to the Duchess of Cambridge's wedding dress as she and the Duke of Cambridge leave Westminster Abbey following their marriage ceremony, on April 29, 2011 in London, England. Andrew Milligan - WPA Pool/Getty Images
Catherine Middleton (in a Sarah Burton for Alexander McQueen wedding gown) looks back at the crowds in front of Westminster Abbey on her wedding day, as bridesmaid Pippa Middleton holds her train on April 29th, 2011.