breastbondage.tumblr.com/post/24458589030/
breastbondage.tumblr.com/post/24458808173/
looks like this was going on a good while ago. Maybe even pre-digital.
breastbondage.tumblr.com/post/24459140472/
breastbondage.tumblr.com/post/24459481377/
breastbondage.tumblr.com/post/24459528319/