I would welcome advice on this one- I love my fiance's two sisters and we get along great, but I'm not sure if I should ask them to be bridesmaids. They are significantly older than us (in their 50's) so I'm not sure if they would want to do the whole ordeal, or if they would feel odd about it. I don't want them to be hurt if I don't ask, but I also don't want them to feel obligated if I do ask. My fiance doesn't have any advice on this really. Also, not that I care too much about this component, but if I have them, then there would be an uneven number of bridesmaids to groomsmen. Additional detail- the husband of one of them is the best man. Any ideas?