Sharon Stone had her breasts augmented without her consent during reconstructive surgery, the actor has claimed.

Stone says she woke from a 2001 operation to reconstruct her breasts following the removal of benign tumours to find they had increased in size, because the doctor felt she “would look better with bigger, ‘better’ boobs”.

“When I was unbandaged, I discovered that I had a full cup-size bigger breasts, ones that he said ‘go better with your hip size’,” Stone writes in her new memoir, which is quoted in an interview in the Times. “He had changed my body without my knowledge or consent.”

The incident is one of a number of upsetting episodes detailed by Stone, now 63, in her book, The Beauty of Living Twice.

Stone says she and her sister, Kelly, were sexually abused as children by their grandfather, Clarence Lawson, with whom both girls were locked in a room for some time. Lawson died when Stone was 14. She writes: “I poked him, and the bizarre satisfaction that he was at last dead hit me like a ton of ice. I looked at [Kelly] and she understood; she was 11, and it was over.”

Stone also gave further details on how she felt she had been misled into an explicit shot in thriller Basic Instinct. The actor said that she was “tricked into removing her underwear” for the famed police-interrogation scene, after being told that it “reflected the light” and assured her genitalia would not be seen.

The actor only discovered this was not the case when she was called to see the final version of the film “not on my own with the director, as one would anticipate, given the situation that has given us all pause, so to speak, but with a room full of agents and lawyers, most of whom had nothing to do with the project”.

The actor continued: “Yes, there have been many points of view on this topic, but since I’m the one with the vagina, in question, let me say: The other points of view are bullshit. It was me and my parts up there.”

Stone’s memoir recounts numerous episodes of misbehaviour at the hands of men in Hollywood, but the actor has recently defended Woody Allen, with whom she worked three times, saying she had “a super-professional and a particularly wonderful experience working with him.”

“I never had an untoward experience with Woody Allen,” Stone said. “My experiences with Woody Allen were all wonderful, he was highly professional with me. He was extraordinarily encouraging to me and I was a young woman, 19 when I started working with him.”

“He’s been nothing but spectacular with me. I have no experience of him being anything but terrific,” Stone said. “I am fully aware of the documentary that’s come out recently, but I have zero of those experiences to report.”

Stone has said she hopes the stories she outlines in her new book will help all actors who have felt harassed and violated on set and elsewhere.

She writes: “I know that all of these women and men who have been harassed, been raped, had their jobs held for ransom, and been sexually tormented deserve their day in court. I know that to be true. I know that all of the unprocessed rape kits on police shelves everywhere must be processed so that crimes can be solved. This inaction is a true and real crime in itself.”