The wire gives you shape and support. Today the wires put in the bras are much more padded, so you don't really feel like the wire is digging into your skin. Today's bras have good wire casing. In the olden days, the bras were very structured and rigid. There weren't as many types of bras to fit different women. Bras had a non-stretch material. Today, you have stretch, lace, wired, and other kinds of bras. Today there are flexible wires that move with your body. A wire bra helps you stay lifted.