Brooke Shields has said she would never have let her children participate in the 'pornography' she was exposed to by her mother as a child star.
The actress was just 11 when she was forced to seductively kiss Keith Carradine, then 27, in 1978 film Pretty Baby in which she played a prostitute.
Ms Shields, 57, said she struggled to understand how her mother Toni Shields did not intervene as she revealed her own daughters, Rowan, 19, and Grier, 16, refuse to watch it.
In a clip from the upcoming documentary Pretty Baby, Rowan says: 'It's child pornography! Would you have let us [do that] at the age of 11?'
Miss Shields replies 'No' as she is overcome with emotion. Recalling the conversation, she told The Sunday Times Magazine: 'That was hard for me, to not justify my mom to them, but when they asked, I thought, ''Oh God, I have to admit this.'' But I don't know why she thought it was all right.'
The star's mother was an alcoholic who died in 2012. Ms Shields, an only child, said she could not be angry at her as her mother was so insecure.
The actress has long deflected the blame faced by her mother - who allowed Shields to pose nude for a Playboy publication at the age of 10, but now Shields has admitted: 'I don't know why she thought it was all right. I don't know.'
The actress is seen breaking down as she reflects on her childhood in the starlight - dealing with issues from being sexualized as a pre-pubescent girl, to the public shame she felt over losing her virginity as a young adult.
Shields explained to her two daughters that she would never let them watch the film in which she kissed a 27-year-old Carradine, while also appearing nude.
Shields' mother reportedly stood by and watched it happen, while her co-star Carradine reassured her that it was all 'make-believe.'
The two-part documentary, also titled 'Pretty Baby' premieres on April 3 on Hulu.
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