Celebrity De Niro Divorces By People Staff Published on January 26, 1999 12:00 AM Share Tweet Pin Email Robert De Niro filed for divorce Monday from his second wife, former flight attendant Grace Hightower, 44, a publicist for the Oscar-winning film star said. Stan Rosenfield said De Niro, 55, filed papers in a New York court to dissolve his two-year marriage to Hightower, with whom he has a son. It was the second marriage for De Niro, who divorced Diahnne Abbott in 1988 after a 12-year marriage. Robert De Niro was one of 800 guests at last night’s party to launch editor Tina Brown’s new Talk magazine. See PASSAGES.