Currently, Underwire bras are the most popular on the market and for good reason. They provide support, separation and lift. Underwires, which are sewn in between layers of material, can be made of actual wire, plastic coated metal or molded plastic. An underwire bra is especially useful for women who wear a C cup or larger, since they offer support and prevent sagging.
Underwire bras come in many styles, including front-closing bras. A front-close underwire bra will close with either hooks and eyes, a barrel closure or, in some cases, a zipper. Some women prefer front-close bras for the ease of getting it on and off. Fit is particularly important in front close underwire bras because they have limited adjustability. Also, make sure the underwire rests smoothly against the body and does not sit on breast tissue.