The bride should definitely take temperament and history into account when choosing her wedding party. If two of your leading ladies are alpha females who won’t back down, or have had trouble getting along in the past, chances are there might be some discord over duties if they’re both involved. If you are faced with this dilemma, the safest rule of thumb is that blood is thicker than water.
Meaning, that if your sister does not get along with your college roommate, your sister would take priority for a spot in your lineup. However, there are often extenuating circumstances and friends who act more like family than your closest relatives do, so you should definitely take your individual