Sex reassignment surgery for male-to-female involves reshaping the male genitals into a form with the appearance of, and as far as possible, the function of female genitalia. Before any surgery, patients usually undergo feminizing hormone therapy, though this is not a requirement. There are associated surgeries patients may elect to undergo, including vaginoplasty, facial hair removal, facial feminization surgery, breast augmentation and various other procedures. There is debate among trans people and activists regarding what terms are preferable to use, some arguing gender confirmation surgery or gender affirmation surgery are preferable terms, while other trans people maintain use of the term sex reassignment surgery.