In an interview with The Sunday Times, British-born Brown revealed her experiences with Weinstein, who has been accused of shocking sexual harassment by multiple women.
Brown has alleged that when she started the magazine Talk with Weinstein, he acted like a "vile bully" and "traumatized" her.
Brown, 63, had been the editor of both Vanity Fair and The New Yorker before Weinstein wooed her to helm a glossy new magazine, Talk, in 1998.
The wife of Sir Harry Evans, former editor of The Sunday Times, Brown had become a celebrity editor in her own right. She said she agreed to leave prestigious The New Yorker for Talk because she thought the work of Weinstein at his then-company Miramax "was so good — Shakespeare in Love, My Left Foot — all these wonderful films, but behind the scenes it was horrendous."
According to Brown, Weinstein subjected her to "profanity, shouting, humiliating, lying" that left her "extremely angry."
The editor alleged, "He was continually pushing me in a direction I didn't want to go . . . I felt I lost my sense of self that last year with Harvey. I began to let him bully me. I made a lot of mistakes because he bullied me. He changed the vision of the mag and I couldn't resist it."
Talk magazine was a money pit that shut down in 2002 after losing millions and Brown had to pick up the pieces of her life: "After I left Talk I felt very, very traumatised by Weinstein," she said.
Brown decided she didn't want to go into any management situation after her experience with the producer. Instead, she enjoyed writing her book, The Diana Chronicles, about the tragic Princess of Wales.
Brown said hearing the news of Weinstein's allegedly "monstrous" behavior towards women has since "brought back the PTSD because it reminded me of the bullying, cajoling and constant pressure."
Weighing in on Weinstein's alleged victims, Brown said, "Some agents and managers who knowingly sent these young actresses off to him really have to ask themselves what kind of custodial responsibility they have for the talent they represent.
"I do think a lot of them knew exactly what would happen when they set up meetings and that's very disconcerting."
Brown said she never suffered the alleged sexual harassment that Weinstein has been accused of, adding, "I assumed there were girls galore, but that's very different from thinking he's a serial rapist. Not everyone knew what was going on in his room."
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