The former dancer, who was the inspiration behind Prince's hit The Most Beautiful Girl in the World, is scheduled to release her tome entitled The Most Beautiful next April (17).
In a statement released by publisher Hachette, Garcia stated that she will document the "highs and lows" of her relationship with Prince, with whom she had an "almost otherworldly connection".
Garcia first met the Purple Rain singer when she was just 16, and he was 32. The pair married in 1996 and welcomed their son Gregory into the world later that year. Sadly, the baby was born with rare genetic disorder Pfeiffer syndrome and died just a week after he was born. Garcia also suffered a miscarriage while married to Prince. The couple divorced in 1999.
"To lose two babies is really scary... it really caught on me emotionally, physically, everything," Garcia previously told Britain's Daily Mirror newspaper. "It took me at least 15 years to get over it and still, to this day, I miss my son.
"I believe a child dying between a couple either makes you stronger or it doesn’t. For me, it was very, very hard to move forward and for us as a couple I think it probably broke us."
After Prince was found dead in an elevator at his Paisley Park Studios compound in Chanhassen, Minnesota in April (16), Garcia released a statement through her manager expressing her devastation at his passing.
"I can't even think of the words of what I'm feeling," she said. "This man was my everything, we had a family. I am beyond deeply saddened and devastated.
"I loved him (Prince) then, I love him now and will love him eternally. He's with our son now."
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