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Martha Stewart’s youngest sister Laura Plimpton dies at age 59

KATONAH, NY - MARCH 6: Martha Stewart (L) and her sister, Laura Plimpton, look at a visitor during a walk on Stewart's Katonah estate March 6, 2005 in Katonah, New York. Stewart was released from jail March 4 and will spend the next five months confined t
KATONAH, NY - MARCH 6: Martha Stewart (L) and her sister, Laura Plimpton, look at a visitor during a walk on Stewart's Katonah estate March 6, 2005 in Katonah, New York. Stewart was released from jail March 4 and will spend the next five months confined t
Photo by Stephen Chernin/Getty Images

The youngest sister of Martha Stewart has died, and the lifestyle guru is remembering her with a loving tribute and photo gallery on her website.

On Wednesday, Stewart took to on her blog to write about the sudden death of the youngest of the six Kostyra siblings, Laura Kostyra Plimpton. Plimpton passed away on Wednesday after being taken off of life support following a massive brain aneurysm earlier this week. She was 59 years old.

Stewart revealed that her sister worked for her and for her company, Martha Stewart Living Omnimedia, for more than 25 years, editing, researching, captioning and she photographed content for the dog-themed blog, The Daily Wag. She was also active on Stewart’s “Ask Martha” radio show and appeared in various videos on the company website

According to the New York Daily News, the mom of three began working for her famous sister after her first husband died at age 33 from a rare form of lymphoma. In a 2004 interview on CNN’S “Larry King Live” Plimpton said that she had a close relationship with her successful sibling and revealed that Stewart even bought her a house so her kids could go to a nice school. Plimpton also publicly defended Stewart during her federal insider trading conviction a decade ago.

In addition to her heartfelt post about her sister, Stewart showcased a gallery of photos of Laura, calling her “an extraordinary mother, wife, and sister.”

While Martha Stewart was extraordinarily close with her sister, that’s not the case with all of her siblings. Her brother, Frank Kostyra, made headlines in the past for allegedly selling stories to the tabloids. In 2004, Westport Now revealed that he planned to list several hundred items from his childhood home for auction on eBay, many of them used by Stewart herself, including a sewing machine she used to sew her wedding gown in 1961 and a 55-year old double boiler she used for cooking chocolate.