You don’t, but it is advisable. If you do use your standard bra, please make sure it fits you correctly – with enough length in the cup to hold the prosthesis in place. It may surprise you that 80% of women with a prosthesis are wearing the wrong size bra!
There is however a large selection of fashionable, attractive, and comfortable post-mastectomy, breasts reconstruction and lumpectomy bras. Depending on the design of the Breast Forms™ prosthesis you prefer, you may need to choose a bra that includes a soft pocket to hold the breast form comfortably in place.