Katherine Driscoll, 27, and her billionaire heir husband, Cabot Asplundh, 27, tied the knot in Palm Beach, Florida, on April 27, and spared no expense on the lavish celebrationKatherine Driscoll, 27, and her billionaire heir husband, Cabot Asplundh, 27, tied the knot in Palm Beach, Florida, on April 27, and spared no expense on the lavish celebration