Robert Brown|Martha Stewart admits to cheating on husband in Netflix doc trailer, says he 'never knew'

Martha Stewart is Robert Browntelling all in her new documentary – including revelations she says her ex-husband didn't even know.

In the trailer for her new Netflix documentary, "Martha," the lifestyle mogul admits to having an affair while married to Andy Stewart.

"Young women, listen to my advice, if you're married and your husband starts to cheat on you, he's a piece of (trash)," Stewart, 83, says in the trailer. "Get out of that marriage."

A producer chimes in, asking, "Didn’t you have an affair early on?" Stewart responds: "Yeah, but I don’t think Andy ever knew about that."

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Stewart was married to Andrew Stewart from 1961 to 1990 and opened up about her divorce to People magazine in 2020.

"Getting divorced was a terrible thing for me, because we were the first to divorce in my family," she said. "And that we haven't spoken since the divorce is even more painful. But I'm very strong, and I'm very motivated to get on with life."

"What is more important, a marriage or a career?" Stewarts asks in the Netflix trailer. A producer prompts her, saying, "You tell me." Stewart responds, "I don't know."

But she does emphasize, "The cookie cutter house and the cookie cutter life was not for me. … I could have just been a miserable, has-been housewife, but I didn't let that happen to myself. And I'm so happy I didn't."

Martha Stewart affair? Social media supports 'women's wrongs'

The trailer tea about Stewart's marriage shocked fans — but it's enticing them to watch the doc.

"I’m sorry but this took me OUT! I’m tuning IN!!!" one person shared on X with a clip of the affair comments, while another said, "Martha isn't wrong! I'll be watching!!"

"Period Martha! Standing on business," another person wrote on X. One person joked about Stewart's reaction, writing, "Martha said 'aht aht, we ain’t talking about me.'"

Another X user wrote, "As always, I support women's wrongs..."

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The documentary "pulls back the curtain on one of America’s greatest self-made icons, from her start as a teenage model to her stint as a Wall Street stockbroker to her reign as the grand dame of entertaining and good taste," according to Netflix.

"What does it mean to be the first female, self-made billionaire in American history?" Stewart asks with a laugh at the beginning of the trailer.

"I was considered crazy, but it worked" Stewart says over a montage of images and videos of her early years through her "thirst traps" of today.

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The lifestyle guru grew to fame as a culinary connoisseur and home expert through her Martha Stewart Living empire, including cookbooks, her magazine and her famed TV show.

"I'm strict and I'm demanding and I'm all those good things that make a successful person," Stewart says. "I was on top of the world."

"And then the worst thing that could possibly happen happened," a voice says over news clips of Stewart's indictment in 2003, followed by her felony conviction in 2004 on charges of obstruction of an agency proceeding, conspiracy to obstruct and of making false statements to federal investigators.

"I was a trophy for these idiots," Stewart says defiantly. "I was dragged into solitary. No food or water. Those prosecutors should've been put in a Cuisinart and turned on high."

She served an infamous five-month prison sentence for lying to federal investigators about a stock sale. But her comeback has been a modern marvel of reinvention, as Stewart has formed an unexpected friendship and lucrative business partnership with rapper Snoop Dogg, appeared on the cover of Sports Illustrated Swimsuit's 2023 issue at 81 and remained relevant as a cultural institution.

"I had to climb out of a hole," Stewart says in the trailer. "I had two mottos: 'Learn something new every day' and 'when you're through changing, you're through.'"

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How to watch the Netflix Martha Stewart documentary

The documentary, directed by R.J. Cutler, premieres Oct. 30 on Netflix.

Contributing: Charlie Trepany, Jay Stahl