Actress Estelle Harris, well-known for playing George Costanza's mother Estelle in the sitcom Seinfeld, passed away on Saturday at the age of 93. She was set to celebrate her 94th birthday later this month.

“Her kindness, passion, sensitivity, humor, empathy and love were practically unrivaled, and she will be terribly missed by all those who knew her," her son Glen Harris told Deadline.

Besides her role in Seinfeld, she had a successful career starring in a series of hits, including the Toy Story franchise, Futurama, Curb Your Enthusiasm, The Suite Life of Zack & Cody and Kim Possible, among other movies and TV series.

Harris was born Estelle Nussbaum to candy-store owners Isaac and Anna Nussbaum in New York City in April 1928, according to The Hollywood Reporter.

Actor Don Rickles (C) and actress Estelle Harris (R), who play the voices of Mr. and Mrs. Potato Head, pose together at the world premiere of Disney Pixar's ''Toy Story 3'' at the El Capitan Theatre in Hollywood, California June 13, 2010. (credit: DANNY MOLOSHOK/REUTERS)
Actor Don Rickles (C) and actress Estelle Harris (R), who play the voices of Mr. and Mrs. Potato Head, pose together at the world premiere of Disney Pixar's ''Toy Story 3'' at the El Capitan Theatre in Hollywood, California June 13, 2010. (credit: DANNY MOLOSHOK/REUTERS)
While she had always been interested in performing, her first role on screen was in Looking Up in 1977, when she was nearly 50 years old. Despite the somewhat late start, she continued to work in bit roles until she was cast as Estelle Costanza in Seinfeld in the fourth season of the sitcom in 1992. She starred in 27 episodes until 1998.

Estelle lived with her husband, Sy, on Long Island. They had two sons, Eric and Glen, and a daughter, Taryn.