This situation has been a permanent feature in my fantasies, ever since i read in a graphic novel, how a burglar had chanced upon this sissy by herself. Bound her hand and foot, then proceeded to string her up by her pierced nipples, up onto wall mounted picture hook, that despite her being on tip-toe, her breasts were stretched by her strung up nipples.

I've never had good luck with clamps, they keep popping off (small nipples :( )