<meta charset="utf-8"><span data-mce-fragment="1">The <a href="https://www.honeylove.com/blogs/bra-talk/the-ultimate-underwire-bra-guide" target="_blank" rel="noopener noreferrer">underwire</a> in a bra is used to lift, shape, and separate the breasts. Underwire is a thin wire that is placed around the underside of each breast and can be made out of metal, flexiwire, plastic, or gel. </span>