Leonard Alan Lauder (born March 19, 1933) is an American billionaire, philanthropist, art collector. He and his brother, Ronald Lauder, are the sole heirs to the Estée Lauder Companies cosmetics fortune, founded by their parents, Estée Lauder and Joseph Lauder, in 1946. Having been its CEO until 1999, Lauder is the chairman emeritus of The Estée Lauder Companies Inc. During his tenure as the CEO, the company went public at The New York Stock Exchange in 1996 and acquired several major cosmetics brands, including MAC Cosmetics, Aveda, Bobbi Brown, and La Mer.