Estelle Reiner grew up in the Bronx, New York. She sang on radio as a teenager. She revived her career in the 1960's and was a well respected jazz singer having appeared in Los Angleles at Cinegrill, Vine Street Bar and Grill, and at Luna Park in Hollywood, California. At the time of her death, she had been married to Carl Reiner for 65 years.
Had a brief but memorable role in When Harry Met Sally... (1989) she's the lady in the deli who says "I'll have what she's having" after Sally demonstrates "faking it" to Harry.