Mia Farrow claims that her ex-husband Frank Sinatra “possibly” fathered her biological son with Woody Allen in an explosive Vanity Fair story on the “Rosemary’s Baby” star’s love life and personal scandals.

“We never really split up” Farrow confesses to author Maureen Orth, admitting that the singer may have parented Ronan Farrow. She said a DNA test has not been conducted.

Farrow was married to Sinatra from 1966 to 1968.

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But paternity doubts are not the only bombshell in the piece from this month’s issue.

Dylan Farrow, the adopted daughter at the center of a brutal custody battle between Allen and Mia Farrow, sticks by her claims that her father abused her sexually.

“There’s a lot I don’t remember, but what happened in the attic I remember. I remember what I was wearing and what I wasn’t wearing,” she tells Orth, “The things making me uncomfortable were making me think I was a bad kid, because I didn’t want to do what my elder told me to do.”

Dylan Farrow has changed her name, but she tells Orth that she wishes she had spoken out at the time of the dispute.

“I have never been asked to testify,” she says. “If I could talk to the seven-year-old Dylan, I would tell her to be brave, to testify.”

Allen has long denied that any abuse took place. His relationship with Mia Farrow collapsed in 1992 after it was revealed he had been having a sexual relationship with Soon-Yi Previn, the then 21-year-old daughter the actress adopted with her former husband Andre Previn.