United Kingdom, May 20 -- Hayden Panettiere has revealed an "Oscar-winning actor and director" exposed himself to her at a party.

The 36-year-old star has recalled feeling "shocked" and confused during the incident at a private apartment where she and a friend attended the party which had left her feeling increasingly uncomfortable after making small talk with a group of men.

Writing in her memoir This Is Me: A Reckoning, she explained that she decided it was time to leave, but as she was putting on her coat, an unnamed star approached her and pointed to what he had claimed was gum stuck to his trousers.

She wrote: "I looked down and recoiled.

"This well-respected, award-winning actor's testicles were hanging out from his unzipped fly...