okay...imagine yourself in a place that you feel at peace... :tick: 
because bras started out with the name brassiere like hundreds of years ago, and like most stuff the name gets shortenedclatters69 said:Because a trouser was originally a tube which was attached to each leg singularly. Therefore you needed a pair of trousers.
Why the same reasoning doesn't apply to bras is a mystery to me.
So maybe a pair of brassieres?Bugsy_Malone 666 said:because bras started out with the name brassiere like hundreds of years ago, and like most stuff the name gets shortened