As middle-class matron Estelle Costanza, Harris put a memorable stamp on her recurring role in the smash 1990s sitcom.

With her high-pitched voice and humorously overbearing attitude, she was an archetype of maternal indignation.

Harris’ agent Michael Eisenstadt confirmed the actor’s death in Palm Desert, California, on Saturday evening.

“She is the mother that everybody loves, even though she’s a pain in the neck,” she told the Pittsburgh Post-Gazette in 1998.

After the nine-season run of “Seinfeld” ended in 1998, Harris continued to appear on stage and screen. She voiced Mrs. Potato Head in the 1999 animated blockbuster “Toy Story 2”

Her “Seinfeld” debut came in one of the show’s most celebrated episodes: the Emmy Award-winning 1992 “The Contest,”

Harris would go on to appear in dozens more episodes of the “show about nothing.” She seethed over snubbed paella, screeched about George’s hanky-panky in the parental bed

Viewers, she told an interviewer in 1998, “just look at her as being funny, cute and a loudmouth. But it’s not how I play her. I play her with misery underneath.”