Brooke Shields is releasing a new book today in which the former model talks about her divorce from the tennis star Andre Agassi.

In his new memoir, "Brooke Shields is not allowed to age: reflections on aging as a woman", the 59-year-old mother of two revealed what Agassi told her during their divorce that made her happy they didn't have children together.

Shields shares two daughters — Grier, 18, and Rowan, 21 — with her current husband, the "Land of the Lost" director. Chris Henchy.

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Shields and Agassi were married from 1997 to 1999, and the former "Pretty Baby" actress credits the tennis champion with helping her break away from her manager mother Teri, according to AARP Magazine.

The "Endless Love" star was oversexualized as a child actress and model, and Agassi's fame was comforting at first because she was no longer in the media spotlight.

"It was the transition I needed," she recalled. "I wasn't strong enough to separate myself from my mother. I kept coming back. With Andrea it was good to feel smaller than the other, because he was so famous and number 1 in the world."

"Everywhere we went, he had tons of bodyguards," she continued. “I could sit back because it wasn't my world. He was the first to get out of the car when we arrived at the events. It was the right kind of respite."

In her new book, Brooke Shields Is Not Allowed to Age, the actress noted that she's "glad" she and Agassi never had children together because of something he said during their breakup.

"Be thankful we didn't have children," he said, "because I wouldn't have made this easy for you." ... It would be a disaster when we divorced, he made that very clear," Shields wrote, per PEOPLE.

The "Blue Lagoon" actress also revealed the conversation she had with Agassi about gaining weight.

"When I confessed my insecurities to my first husband, he would always say, 'I wish you could see yourself the way I see you,'" she wrote. "However, when I said, 'Will you still love me if I'm big and fat?' (I meant when I got pregnant – an unfair question for anyone to ask another person I know!) I could never have expected his answer.”

Shields added that Agassi told her, "'I love you too much to let you get big and fat!' I definitely didn't see it coming and I have to admit I was a bit giddy, but we all know how that relationship turned out."

As previously reported The BlastShields underwent labia reduction surgery because of the pain she suffered while exercising and during "romantic moments."

After the surgery, the doctor advised her that he had performed unwanted vaginal rejuvenation on Shields.

"When it was over, the doctor gave me an overview of how it went," she wrote. “I was very detailed,” he said, to my relief and excitement. And then: “I was there for four hours, and you know what I did? I got you a little tight! I gave you a little rejuvenation!''

Shields was delighted with the news and wrote: "Wait, what?? I was shocked, speechless. I can't remember how I responded or even if I said anything. Should I have said thank you?"

Despite her doctor's assumption that she would be happy with the procedure, Shields says she was "furious."

“This man surgically altered my body without my consent,” she remarked. "And he thought he was doing me a favor by throwing in a 'bonus procedure'? The sheer gall of it infuriated me."

"The fact that the most intimate parts of my body were in the public eye for so long... it was enough," she wrote. "All I could think was, 'Why can't everyone just leave my v-gina alone?' (Even now, as I write this, I know this is going to be a headline-grabbing piece. Whatever. Women deserve all the information.)"

Shields said she never spoke to the doctor who performed the unwanted procedure again because she was unsure.

"I never took action against this doctor," she wrote. "I never spoke to him about it again, partly because I started second-guessing myself."

She continued, "Wondering if he was right, that I should feel lucky. Or maybe, I thought, this was a necessary improvement for my man, who was secretly unhappy but would never dare address it. on the subject of my 'relaxed' there?' It's crazy that those ideas even entered my head."

The "Mother of the Bride" star also noted that she didn't come forward at the time because she didn't want to be the subject of headlines. However, if it happened to her today, "I would write my loud headline and blow it all over the place."