So, I'm trying to figure out my bridal party even though I have plenty of time to do it. I'm asking for people's opinion on one particular detail of it- would it be wrong to ask my college roommates sister to be a bridesmaid but not my college roommate? My roommate tended to really aggrivate me while we lived together all 4 years of college, but me and her sister always got along great, without any problems. I'd much rather not have my roommate in my wedding simply because I know she'll end up making me even more irritated and frustrated. How wrong would this be?