Mandatory Credit: Photo by REX Shutterstock (3211074bd) Catherine Duchess of Cambridge Catherine Duchess of Cambridge visits the SportsAid Athlete Workshop, Copper Box, Olympic Park, Stratford, London, Britain - 18 Oct 2013 The Duchess of Cambridge has made her first Sola appearance since giving birth. The new mum donned a nautical inspired outfit consisting of blue jeans, a blue and white striped top and matching blue blazer to visit a SportsAid Athlete Workshop at the Olympic Park in Stratford. And despite having to leave little Prince George behind, Catherine looked in great spirits as she laughed and joked with the young sports stars. She didn?t just watch from the sidelines either ? getting stuck into a game of volleyball and showing off a flash off toned stomach during one particularly energetic move. Kate is a patron of SportsAid, which provides training and expert tuition to young athletes.