I have five bridesmaids. One is my twenty year old cousin and the other four are between the ages of 28 and 30. I don't want my cousin who is younger and only really knows my MOH to feel left out, but I also don't want her to feel uncomfortable. My MOH is planning an overnight trip to Block Island for my bachelorette, and I don't know if I should invite my cousin. She is underage, so I don't want her to get left alone/behind if we go out to a bar . . . but again, I don't want her to feel left out if I do not invite her. Any advice? Thanks!