''Once Upon a Mattress'' PHOTOS BY CHRIS KELLY staff Left to right: Maureen Elford, 17, playing Princess Winnifred, introduces herself to the court during a dress rehearsal Monday for Old Bridge High School's production of "Once Upon a Mattress." The shows will run tonight through Saturday at the high school, Route 516. Kaitlyn Walker, 18, as Queen Aggravain, is set to place the pea underneath a mountain of mattresses.