Pamela Anderson has alleged Tim Allen flashed his penis at her on the set of Home Improvement when she was 23 years old.
The claim has been made in the former actress's upcoming memoir, Love, Pamela, an excerpt of which has been seen by Variety.
Anderson said it happened in 1991 and was on her first day of filming as Lisa, the assistant to Allen's Tim 'The Toolman' Taylor.
"On the first day of filming, I walked out of my dressing room, and Tim was in the hallway in his robe," she wrote.
"He opened his robe and flashed me quickly - completely naked underneath. He said it was only fair, because he had seen me naked.
"'Now we're even,' he said. I laughed uncomfortably."
Allen would have been 37 years old at the time and it is believed he was talking about Anderson's modelling in adult magazine Playboy.
There has been no official comment from Allen about the alleged flashing.
Anderson left Home Improvement after two seasons as she was offered the chance to join Baywatch as lifeguard CJ.
Love, Pamela is expected to trace Anderson's rise to fame and also expected to address the series Pam & Tommy, which she hasn't commented on since it was released in February 2022.
That concentrated on the fallout from her stolen sex tape and starred Lily James as Anderson and Sebastian Stan as her former husband, Motley Crue rocker Tommy Lee.