Mitzi Shore, who founded the Los Angeles stand-up comedy club The Comedy Store in 1972, has died at age 87. She became a matriarch for a generation of comedians who began their careers on her stage and went on to become superstars. Comedians who graced her stage include Robin Williams, Jerry Seinfeld, Garry Shandling, Freddie Prinze, Jay Leno, David Letterman, Chevy Chase, Sam Kinison, Byron Allen, Andrew Dice Clay and Jim Carrey. The latter co-created the Showtime series I’m Dying Up Here based on his early stand-up days, and it is said that Melissa Leo’s character Goldie Herschlag was modeled after Shore.

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Shore passed away this morning. Awaiting more information, but her passing was confirmed in a statement by The Comedy Store.

“It is with great sadness and very heavy hearts that we report the passing of Mitzi Shore, the legendary Godmother of the world famous Comedy Store. Mitzi was an extraordinary businesswoman and decades ahead of her time who cultivated and celebrated the artistry of stand-up comedy. She was also a loving mother, not only to her own four children, but to the myriad of comedians who adored her. She leaves behind an indelible mark and legacy and has helped change the face of comedy. We will all miss her dearly.

In lieu of flowers, please consider a donation to The Motion Picture and Television Fund, where The Comedy Store has created a Comedian’s Assistance Fund.

The Comedy Store will be closed today.