Pippa Middleton wore a Maje dress and L.K. Bennett shoes to join her parents, Carole and Michael, last night for a beach-themed party at London's Goring Hotel. The spot was memorably where Kate Middleton spent her last night as a single woman before her marriage to Prince William on April 29. The Middletons used the Goring as their home base during the royal wedding festivities, and Prince Harry even came over following the reception at Buckingham Palace to keep the afterparty fun going. Pippa is back in the city doing her usual workweek routine after wrapping up her latest exciting weekend. Fresh off jaunts to Madrid and Paris, Pippa spent Saturday completing a triathlon in the English town of Woodstock! Kate Middleton wasn't able to join the family fun last night, but she was in the public eye to attend the Epsom Derby with Prince William just a few days ago. She and William are gearing up for another big outing tomorrow evening. They're expected to attend the annual Ark dinner, held on a field near Kensington Palace, where William is to announce the new project from his Prince's Foundation and guests will let loose to tunes provided by DJ Mark Ronson.