Life in Marcia Cross's household is one constant gabfest thanks to her chatty twin daughters Savannah and Eden. "They are big talkers," Cross told PEOPLE at Mott's and Feeding America charity event in New York Monday. "They happen to be very verbal girls and I think that comes from me. Their mom is pretty verbal." Now that her girls, who turned 2 last month, can express themselves, Cross, 46, enjoys every minute engaging them in