My sister wants a list of who I should invite to the bachlorette party. Do I invite my fiance's brothers (who is the best man) girlfriend? We are not "friends" but cordial with each other and have gone on weekend getaways with the boys together. Just not sure if she should be invited. On that same topic do the mothers have to be invited? AWKWARD. What about the cousins of my fiance that are girls. Is it rude if my sister (Matron of Honor) just invites my friends?