There’s one final surgery that Chaz Bono really wants (yes -- ‘THAT’ one), as he makes his final step in his transition from a woman to a man.

The Dancing with the Stars contestant -- who was born Chastity and began gender reassignment surgery around three years ago -- has undergone a number of operations in his transition, but is now readying himself for the "big" operation, although he is unsure which procedure would be best for him.

Chaz, 42, -- the son of Cher and her late ex-husband Sonny Bono --  told Australia's 2Day FM radio station: "So far I'm on hormones and I've had a hysterectomy and I've had my top surgery, and I'm still at this point researching all the information about bottom surgery before I make a decision about that.