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Book it! Holly Madison is almost ready to have more kids, and the timing is just about right.

Asked when she's going to expand her family, she tells People magazine, "hopefully soon."

The former Playboy model is about to set out on a book tour to promote "Down the Rabbit Hole: Curious Adventures and Cautionary Tales of a Former Playboy Bunny," her memoir about her life. The book, which will be released June 23, is already the topic of gossip circles, as Holly claims her life in the Playboy Mansion was anything but glamorous.

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Her life now, though, is pure happiness, as she's the mother to 2-year-old daughter Rainbow Aurora, whom she shares with her husband, mega music promoter Pasquale Rotella.

"Rainbow is awesome," Holly told the magazine. "I got off easy with her. She's a really good kid."

As for the next kid, well, she knows that she may not get as lucky, or so she's heard — "That's what everyone is saying! Other people hate that [Rainbow] is so good," Holly said.

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The baby-making will come in due time. First, though, Holly is ready to pound the pavement to bring attention to her much-discussed book. In the memoir, Holly says life within the walls of the Playboy Mansion was miserable and included backstabbing and drugs. Hef, she wrote, "pitted [his girlfriends] against one another." Holly even contemplated suicide.

"I don't have any loyalty to Hef. I haven't talked to him in four years, so there's no reason to reach out now. Besides," she penned, "it's the truth."

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The former star of "The Girls Next Door" recently told Wonderwall.com why she even wanted to write the memoir.

"I wanted to do it because I always felt like there were a lot of misconceptions about my life and the Playboy Mansion and the TV shows. I felt like everyone else sort of had to have their say and I felt like I never got to share my story.

"Every chapter is different and there's a different chapter of dirt everywhere," she continued. "As I started writing it and seeing the chapters come together I was like, 'Man there's a good level of dirt.' It's like a garden that's going to grow wonderful things."

Her belly, she hopes, will also soon grow wonderful things, like a baby. "Hopefully after the book tour," she said.

Sounds like we can expect a sibling for Rainbow in 2016.