Born into one of the wealthiest and best-known families in American history, Gloria Vanderbilt has lived in the public eye for more than 90 years, unapologetically pursuing love, family and career, experiencing extreme tragedy and tremendous success side by side. In the poignant and revealing feature-length documentary NOTHING LEFT UNSAID: GLORIA VANDERBILT & ANDERSON COOPER, Vanderbilt and son Anderson Cooper look back at her remarkable life. Directed by Liz Garbus, the exclusive presentation debuts SATURDAY, APRIL 9 (9:00-11:00 p.m. ET/PT) on HBO.