Do all the men in the Wedding Party have to have the exact same tux?
That depends on the bride and groom. Traditionally all the members of the wedding party should be identical in their attire. However, if you have selected a traditional black tux and a member of the party owns a very similar tux, you may allow him to wear his own. Often times, the bride and groom also choose to distinguish the groom with a slightly varied accessory.