What Do Underwires Do in a Bra? by Estelle Puleston May 18, 2021 by Estelle Puleston May 18, 2021 Underwired bras seem to be the Marmite of the lingerie world. But what do these love-’em-or-hate-’em wires do? You probably know that they play a role in adding support to the bra, but how do they do it? Read more