Estelle Reiner (Estelle Lebost, June 5, 1914 – October 25, 2008) was an American actress, comedian, and singer who is known for her roles in When Harry Met Sally, Fatso, and in To Be or Not to Be. She was the mother of Rob Reiner and the wife of Carl Reiner.
Reiner was born Estelle Lebost on June 5, 1914 in The Bronx, New York. She studied at James Monroe High School. She was married to Carl Reiner from 1943 until her death in 2008. They had three children. Reiner died from natural causes in Beverly Hills, California on October 25, 2008, aged 94.