Nearly two years after publicly announcing her transition from male to female, Caitlyn Jenner has undergone sex reassignment surgery and tells the world about the decision in her upcoming memoir, a new report claims.“The surgery was a success, and I feel not only wonderful but liberated,” Jenner reportedly writes in “The Secrets of My Life,” out April 25 (as excerpted by RadarOnline).The former Olympian reportedly underwent the below-the-belt surgery in January of this year.A rep for Jenner had no comment.The 67-year-old formerly known as Bruce Jenner gets very candid in the memoir, reportedly writing that, for her, a penis “has no special gifts or use for me other than what I have said before, the ability to take a whiz in the woods. I just want to have all the right parts. I am also tired of tucking the damn thing in all the time.”She decided to go public about her latest surgery “so all of you can stop staring. You want to know, so now you know. Which is why this is the first time, and the last time, I will ever speak of it,” according to Radar. Having the operation apparently was a “complex decision,” and Jenner considered potential health risks.It was previously known that Jenner had undergone facial feminization surgery and gotten breast implants.Jenner — who is parent to six children with ex-wives including Kris Jenner — came out as transgender in April 2015, during a highly publicized interview with Diane Sawyer. A few months later, she made her public debut as Caitlyn on the cover of Vanity Fair.