My boyfriend's (no, we're not engaged yet, but WE have decided on a date and started planning) sister has always said she wants to be a BM. However, bf and I really don't want her to be for a few reasons..1) She does NOT take very good care of herself, and as horrible as this sounds, WE don't want that in our pictures that WE will be paying bucks for.2) We hardly ever see her because she spends all her time cooped up in her controlling relationship.I'm not asking if you think we should include her in the wedding. I'm asking, how do you tell a person no, without being out of line? I don't want to ask her to take better care of herself, because that is JUST AS RUDE as telling her no for the reasons we already have. =/