Hi Goofus, nice to meet you.
While water bras and breast forms are great for a realistic look and feel, cleavage formed by your own flesh is an entirely different thing. Imagine wearing a low cut dress, and having visible cleavage showing... oh my gosh I feel light headed now... as if you have real breasts.
BUT, with that said, I must backpedal now and say that I still dont want to be the one to try it... especially now that Ive heard it feels like a medieval torture device! So I think I might try a water bra like you mentioned. Or maybe Ill go ahead and buy breast forms... Ive been thinking of that for so many years now, its about time I do so 🙂