"Riverdale" actress Lili Reinhart has come forward to share her own experience with sexual harassment in the wake of the sexual misconduct allegations against Harvey Weinstein.

Reinhart wrote in a Tumblr post on Friday about a harrowing experience with an older, unnamed co-worker, who she says tried to force himself on her and left her feeling "completely violated", reports ew.com.

"I'm not comfortable giving specific details about the situation because I don't feel it's necessary. All that matters is that he tried to force himself on me when we were on a date," Reinhart wrote.

"I had to stop him and say, ‘No, I don't want that', and ‘I can't do that'. I physically walked away from the situation before it could get any worse. I remember feeling like this was a scene right out of a horror movie."

Reinhart goes on to talk about how when the man was taking her home she realised that he was instead driving to his apartment despite her insisting he take her home, adding that she knew "something bad was going to happen" to her if she went there.

"This guy proceeded to tell me that it was my fault for leading him on. Saying that ‘I seemed like a sexual girl and that I'd be down for it'," Reinhart wrote.

Reinhart attributes her silence on the matter to the amount of power her harasser had on the set where she was working, fearing no one would believe her if she spoke out.

"I stand with them. I believe them. I believe in standing up for yourself as a woman and coming forward about sexual harassment," she concluded.