She’s lovely and we get on well, although not massively close, and she wants me and my other sister to be bridesmaids (as well as a bunch of her friends) and wear a dress I’ll look awful in and pay half for it. I’m in my 30s with lots of kids including a new baby. Would it be awful if I just said I don’t want to do it? Our other sister is happy to do it but she doesn’t have kids.