Following his recent ground breaking interviews with famous families who have coped with tragedy, Anderson Cooper has turned the attention to his own family in an emotional interview about his brother's suicide, with his mother, Gloria Vanderbilt.

Twenty years after Carter Vanderbilt Cooper took his own life, Anderson sat down with Gloria to recall the tragic day that his 23-year-old brother flung himself from the 14th floor terrace of their New York penthouse apartment.

PHOTOS: Anderson Cooper Talks To His Mom Gloria Vanderbilt About His Brother’s Suicide

In the rare interview, which airs Monday on Cooper's syndicated talk show, Anderson, the 87-year-old Vanderbilt heiress opened up to her CNN star son, who asked her: "Do you still think about that day?"