I've worn a black sports bra and had a robe nearby. I've never lost my sense of modesty, no matter what stage of labor I'm in.Is there anyway you could limit FILs presence to a certain area of the house---like where you are not? I would be hesitant to invite anyone who I wasn't completely comfortable around to be present for the birth. It's amazing what the body can do if inhibited. Just a thoughtBest wishes with everything!!!