My FI comes from a blended family of 8(!!!) children and he is the oldest. For my bridal party I only really want to have my sister as matron of honor and cousin who I grew up being incredibly close to with me. The problem is that he has 7 siblings, he only was planning on having his the two oldest brothers in his side so we are even but that leaves the issue of his sister who is only a year younger than us. Lil sister and I have had ups and downs in the relationship we have because I don't exactly agree with some of her life choices, but she is exicited that I am going to be her sister (all the other kids are boys!). She is also an INCREDIBLE piano player and while I don't want her in my bridal party is it rude to ask her to play at the ceremony? I know this is kinda crazy and confusing but I'm just not sure how to include her exactly. If your future SIL asked you to play piano would you be offended for not being asked to be in the wedding party?