Since men are generally not clothing shoppers, the bride will have to make sure she gives her fiance a deadline to find a tux. Generally, it's best if the groom gets his tux at about three to four months before the wedding. He'll then have to apply some pressure to his groomsmen to get their attire in a timely manner as well. If they wait till the last minute they may not be able to find a matching tux or all the accessories they need.