A rep for the gay rights advocate and writer confirmed Chastity is undergoing the process to go from female-to-male.
"Chaz, after many years of consideration, has made the courageous decision to honor his true identity," rep Howard Bragman said in a statement.
According to TMZ, which first reported the story, Chaz is in the early stages of transition, which started shortly after the LGBT (Lesbian, Gay, Bisexual, Transgender) activist's 40th birthday.
"He is proud of his decision and grateful for the support and respect that has already been shown by his loved ones," Bragman's statement continued. "It is Chaz's hope that his choice to transition will open the hearts and minds of the public regarding this issue, just as his 'coming out' did nearly 20 years ago."
The rep said Chastity, who came out at 18 as a lesbian, and now goes by Chaz, hopes to stay out of the media's glare during the transitioning process.
"We ask that the media respect Chaz's privacy during this long process as he will not be doing any interviews at this time."
Neil G. Giuliano, president of the Gay and Lesbian Alliance Against Defamation (GLAAD) commended Chaz over his decision.
"Chaz Bono's decision to live his life authentically represents an important step forward, both for him personally and for all who are committed to advancing discussions about fairness and equality for transgender people," Giuliano said. "Coming out as transgender is an extremely personal decision and one that is never made lightly. We look forward to hearing Chaz's story in his own words in the future."
Chaz is one of many stars who have revealed they are transgender or are in the process of having gender reassignment surgery.
Katelynn Cusanelli shared her life experiences shortly after her final surgery to become a woman on MTV's "The Real World: Brooklyn," earlier this year. Additionally, last year on "Dirty Sexy Money," a short-lived drama on ABC, William Baldwin's character, Patrick Darling, was involved in an affair with a transgender male-to-female character, Carmelita Rainer, played by Candis Cayne, who herself is transgender.