The 57-year-old actress has become the latest star to speak publicly about their experiences with the disgraced producer, who stands accused of sexually harassing over 40 women during a time period of almost three decades.
Sean - whose full name is Mary Sean Young - claims Weinstein, 65, pulled his ''you-know-what'' out to ''shock'' her during a meeting about 1992 movie 'Love Crimes', and although she made light of the situation, she was made to feel uneasy during their meeting.
She said: ''I personally experienced him pulling his you-know-what out of his pants to shock me. My basic response was, 'You know, Harvey, I really don't think you should be pulling that thing out, it's not very pretty.'''
The 'Blade Runner' actress also insists the alleged interaction with Weinstein was traumatic enough to prevent her from ever working with the producer again.
She added: ''Then never having another meeting with that guy again, because it was like, what on earth?''
And the 'No Way Out' star took a moment to slam Hollywood for treating women who speak out against sexual misconduct as ''crazy''.
Speaking during an appearance on podcast 'Dudley And Bob With Matt Show', Sean said: ''The minute you actually stand up for yourself in Hollywood, you're the crazy one. I think that's why a lot of women don't come out and didn't come out about their experiences about that kind of lewdness and ridiculousness with Harvey.''
Sean's accusation comes after stars including Cara Delevingne, Rose McGowan, Ashley Judd, Gwyneth Paltrow and Kate Beckinsale recently came forward to open up about their own experiences with Weinstein.
And the sexual misconduct allegations made against the producer have also encouraged Reese Witherspoon, Laura Dern and Blake Lively to open up about being sexually harassed by other figures in the business.
Harvey has since been sacked from his position as co-chairman of the The Weinstein Company, his wife of ten years, fashion designer Georgina Chapman, has left him.
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