No, tethers, I don't think I can now! I'd be thinking of you lot every time I wore it - and not in a good way.
I think I'm over-compensating - I've got a gorgeous black knit dress that I wear a lot, but I made the mistake of wearing it in front of my students and realized that:
a) my boobs aren't really a D cup any more and
b) they do bounce quite a lot when you've had to loosen your bra straps in order to keep said bra out of sight.
Hence the foray into nunnishness.