Martha Stewart thinks Gwyneth ‘just needs to be quiet’

Martha Stewart says Goop founder Gwyneth Paltrow should shut up and stick to acting.

“She just needs to be quiet. She’s a movie star. If she were confident in her acting, she wouldn’t be trying to be Martha Stewart,” the domestic doyenne snipped to Net-a-Porter’s Porter magazine.

And, after Blake Lively started her own lifestyle site, Preserve, Stewart admits the “Gossip Girl” star had come to her for advice — but sidesteps making a judgment and leaves it to her senior vice president, Kevin Sharkey, who says of Lively: “I don’t get the sense she’s credible. She’s enthusiastic, but she’s not credible.”

Stewart also scoffed at Sheryl Sandberg’s best-selling book “Lean In,” saying women should spend less energy fighting barriers in the workplace and be more entrepreneurial: “Too much time is spent . . . Isn’t ‘leaning in’ spending a lot of time? . . . I think being entrepreneurial is something women should strive for, rather than working up the corporate ladder.”

In the profile by Vassi Chamberlain, the queen of lifestyle branding — who served five months in jail starting in 2004 for obstructing justice during an insider trading probe of her 2001 sale of ImClone stock — also blasted the Netflix series “Orange Is the New Black” as disappointing.

“They could have done that so much better. That girl” — referring to Taylor Schilling — “is not good enough, the lead actress,” Stewart grumps. “I met the real Piper [Kerman]. She was in prison either the same time or after me, and I talked to her about it.”

Stewart had asked to be sent to Danbury, the real-life prison on which the show’s Litchfield is based and where Kerman served 13 months beginning in 2004. But Danbury was full, and Stewart served her time in West Virginia.

Stewart, who said she used to give lectures while behind bars, expressed sympathy for her fellow female inmates. “I feel so sorry for all of them in prison. The system lets them down. It’s hideous. And I’m sorry I have not had the time or the real inclination to help, but right now, there is a huge movement against the penal system.”