So my mom just asked what the "new" etiquette is for parents of the wedding party. She made it seem like parents used to be invited, but maybe she is just trying to be cautious. A few of my BMs' parents are friends with my parents, and they will be invited because of that, but others are not and I didn't even think to put them on the list. (FTR: I haven't sent invites or ANYTHING out yet, just need to know if I should update my guest list.)
So, regardless of how things used to be, is there a rule about inviting WP parents?