Lifestyle queen Martha Stewart's mother has died. She was 93.

Martha Kostyra -- who was nicknamed "Big Martha" -- passed away at Norwalk Hospital near her home in Weston, Conn., on Friday after suffering a stroke early last week.

Stewart, 66, has often credited Kostyra for teaching her all she knows, and Kostyra frequently appeared alongside her daughter on her TV show, "Martha."

Stewart broke the news of her mother's death on her Web site on Saturday, where she posted video clips of the two together on her blog.

She writes: "I am very sad to tell you that my mom passed away. Here's a tribute to Martha Kostyra -- Big Martha."

Widowed Kostyra, a retired teacher, is survived by her six children.

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