Hayden Panettiere claims Oscar winner exposed himself to her at Hollywood bash

Hayden Panettiere claims that an “Oscar-winning actor and director” exposed himself to her when she was 19.

The “Nashville” actress, now 36, details in her newly released memoir, “This Is Me: A Reckoning,” that the shocking situation happened after a friend invited her to an “industry” party at her Los Feliz, California, apartment.

Noting that the party consisted of just her, her friend, and “a small group of men, who were gathered together, talking, drinking, and smoking weed,” she recalls feeling immediately uncomfortable.

“These men seemed to be a little too comfortable together, like they knew something I didn’t,” she writes.

She goes on to detail that, after about half an hour, she was about to say goodbye to her pal when the Oscar winner approached her.

He wishes her a good night and warns her to “be careful when you leave because someone spit their gum out somewhere, and I got some on my pants,” before allegedly directing her to look down.

“I looked down and recoiled,” she writes. “This well-respected, award-winning actor’s testicles were hanging out from his unzipped fly.

“Men in Hollywood had always been kind and respectful around me. There may have been a peck on the lips here and an inappropriate comment there, but nothing had crossed a line.”

She adds that the incident “hadn’t hurt me” but left her “shocked.”

Elsewhere in the book, the “Bring It On” star details her physically violent relationship with ex Brian Hickerson, which was marred by multiple domestic violence incidents and arrests.

Panettiere also opens up about her relationship with “Heroes” co-star Milo Ventimiglia, whom she dated when she was 18 and he was 29; comes out as bisexual and writes about her complicated relationship with her estranged mother, Lesley Vogel.

Vogel, who was also her daughter’s manager, has since hit back at Panettiere’s recollections on her press tour, telling Page Six exclusively that she believes “the present drama is partially to sell books.”

“This Is Me: A Reckoning” is out now.

If you or someone you know is affected by any of the issues raised in this story, call the Sexual Assault Hotline at 1-800-330-0226.

If you or someone you know is affected by any of the issues raised in this story, call the National Domestic Violence Hotline at 1-800-799-SAFE (7233) or text START to 88788.