(Above, from left: Richard Plepler, HBO Chairman and CEO; Gloria Vanderbilt; Sheila Nevins, President, HBO Documentary Films; and Anderson Cooper at the New York premiere of Nothing Left Unsaid.)

On Monday, April 4, the Time Warner Center hosted the premiere of the HBO Documentaries feature Nothing Left Unsaid: Gloria Vanderbilt and Anderson Cooper.

The film chronicles Ms. Vanderbilt's remarkable life through her private archives as well as original news media footage, and was the toast of the town among a who's who of New York society -- a fitting tribute to an icon of one of the most well-known families in American history. 

Check out the photos of the premiere below, and be sure to catch Nothing Left Unsaid on HBO this Saturday, April 9 at 9 p.m.