The 66-year-old singer revealed the production will be staged in New York`s Broadway and feature three versions of herself at different stages of her career.
One actress will portray the singer before she met Sonny Bono; another after the pair split in 1975, leading up to and through her `Believe` tour in 1999 and a third will play a "wise" present-day version.
Cher tweeted: "Prod r trying 2 write musical now about my life with my music. Its very Interesting idea. There r 3 Chers! 1 b4 i met Son thru S&C yrs. 1 after i left thru Believe tour & 1 Now (sic).
"I could b old Cher! Shes wise n tells 2 young 1`s not 2 fear future (sic)"
The three Chers will interact and perform with one another in the show.
The `If I Could Turn Back Time` singer added: "They all 3 talk 2 each other &Sing 2gether! Its musical w/ my music (sic)"
Cher is planning to be involved in the script so she can unveil some secrets about her life.
She tweeted: "i was there & know stories that no1 knows but me ! I hope it happens!
"[It will be on] Broadway! Its VERY SLOW PROCESS! been working on it quite a while now (sic)"
In 2010, film director Andy Fickman revealed he was exploring the possibility of making a Chermusical.
He said: "We`ll be making announcements about that project coming together shortly. She`s a fairly phenomenal character, Cher - as a human being I think she`s one of the great icons of all time, a force to be reckoned with."